Rover: first step to human space programme to Mars

 

 

        AP Seeking life: The rover is equipped with a drill to gather samples underground and send them to a self-contained lab to determine if there are any microorganisms present on the planet.

NASA’s Jet Propulsion Laboratory has high expectations for the upcoming landing of the Curiosity rover on Mars and is certain of great science results, a lab engineer says.

Torsten Zorn, a robotics engineer with JPL and a four-year veteran on the Curiosity project team, told Xinhua in an interview that the most interesting part of the venture could be learning more about the geological history of Mars.

Zorn said scientists want to find out how Mars’ once wet surface dried up, how long the process took and what caused the changes. The findings will be important for scientists to determine whether Mars is habitable for humans.

To find life, in any form, Zorn said, is a goal of Curiosity. The rover is equipped with a drill to gather samples underground and send them to a self-contained lab to determine Mars’ geological conditions and changes, and if there are any microorganisms present on the planet. The small lab will also test the soil samples to see if there are signs of life in the history of Mars.

Curiosity will test the Mars soil only with its own equipment after it lands on the planet on Sunday (August 5) but future missions will bring samples back to Earth for more study, Zorn said.

Zorn said many Americans have volunteered for the first one-way trip to Mars, but he said that if scientists can send human to Mars, they can also guarantee a return trip.

Paving the way

Curiosity will help pave the way for future manned Mars missions, Zorn said.

“It will definitely do its part to further help man’s ability to land on another planet,” he said. “We have a couple of different instruments onboard that will increase our knowledge of the environment, the radiation environment, the chemistry of the surface. There are many different ways that are helping should we decide to pursue a human space program to Mars. This is one of the stepping stones towards that goal.” Curiosity will concentrate on a small area of Mars to conduct detailed research, Zorn said, but following traces of water should be the general rule.

Curiosity also will take video images for the first time and send them back to Earth, Zorn said.

Using plutonium decay

The rover also will be the first to use nuclear power thanks to a radioisotope thermoelectric generator that will utilize the heat of plutonium-238’s radioactive decay.

The long-lived power supply will enable Curiosity to operate for at least a full Mars year (687 Earth days, or 1.9 Earth years).

Zorn said nuclear power is not new to spacecraft and was available in the 1960s. The technology is much more advanced now and suitable for use in a long-range rover such the Curiosity. “I am very close to 100 percent sure” of success, he said, adding that the lab has tested Curious under almost all scenarios and has prepared several years for the mission.

Curiosity represents an international effort, Zorn said, because it contains parts from Russia, Spain and Canada.

With a length of 10 feet and weight of 899 kg, the rover is the largest vehicle humans have sent to other planets, Zorn said. The Curiosity program has cost a total of 2.5 billion dollars, including 1.8 billion dollars for spacecraft development and science investigations, NASA said.

Curiosity, launched on Nov. 26, 2011, will travel almost 352 million miles (567 million km) to reach Mars.

Curiosity sets down on Mars, beams first image

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• AP This photo released by NASA's JPL, shows one of the first images taken by NASA's Curiosity rover, which landed on Mars on Sunday evening.
• AP In a photo provided by NASA, the Mars Science Laboratory team in the MSL Mission Support Area reacts after learning the the Curiosity rover has landed safely on Mars and images start coming in at the Jet Propulsion Laboratory on Mars, in Pasadena, California.
• AP In this photo released by NASA's JPL, Mars Science Laboratory (MSL) team members talk in the MSL Mission Support Area at the Jet Propulsion Laboratory ahead of the planned landing of the Curiosity rover on Mars, in Pasadena, California on Sunday.

In a show of technological wizardry, the robotic explorer Curiosity blazed through the pink skies of Mars, steering itself to a gentle landing inside a giant crater for the most ambitious dig yet into the red planet’s past.

A chorus of cheers and applause echoed through the NASA Jet Propulsion Laboratory on Sunday night after the most high-tech interplanetary rover ever built sent a signal to Earth. It had survived a harrowing plunge through the thin Mars atmosphere.

“Touchdown confirmed,” said engineer Allen Chen. “We’re safe on Mars.”

Minutes after touchdown, Curiosity beamed back the first pictures from the surface showing its wheel and its shadow, cast by the afternoon sun.

It was NASA’s seventh landing on Earth’s neighbour; many other attempts by the U.S. and other countries to zip past, circle or set down on Mars have gone awry.

The arrival was an engineering tour de force, debuting never-before-tried acrobatics packed into “seven minutes of terror” as Curiosity sliced through the Martian atmosphere at 20,920.5 kph.

In a Hollywood-style finish, cables delicately lowered the rover to the ground at a snail-paced 2 mph. A video camera was set to capture the most dramatic moments which would give earthlings their first glimpse of a touchdown on another world.

The extraterrestrial feat injected a much-needed boost to NASA, which is debating whether it can afford another Mars landing this decade. At a budget-busting $2.5 billion, Curiosity is the priciest gamble yet, which scientists hope will pay off with a bonanza of discoveries.

Over the next two years, Curiosity will drive over to a mountain rising from the crater floor, poke into rocks and scoop up rust-tinted soil to see if the region ever had the right environment for microscopic organisms to thrive. It’s the latest chapter in the long-running quest to find out whether primitive life arose early in the planet’s history.

The voyage to Mars took more than eight months and spanned 352 million miles (566 million kilometers). The trickiest part of the journey? The landing. Because Curiosity weighs nearly a ton, engineers drummed up a new and more controlled way to set the rover down. The last Mars rovers, twins Spirit and Opportunity, were cocooned in air bags and bounced to a stop in 2004.

The plans for Curiosity called for a series of braking tricks, similar to those used by the space shuttle, and a supersonic parachute to slow it down. Next - Ditch the heat shield used for the fiery descent.

And in a new twist, engineers came up with a way to lower the rover by cable from a hovering rocket-powered backpack. At touchdown, the cords cut and the rocket stage crashed a distance away.

The nuclear-powered Curiosity, the size of a small car, is packed with scientific tools, cameras and a weather station. It sports a robotic arm with a power drill, a laser that can zap distant rocks, a chemistry lab to sniff for the chemical building blocks of life and a detector to measure dangerous radiation on the surface.

It also tracked radiation levels during the journey to help NASA better understand the risks astronauts could face on a future manned trip.

After several weeks of health checkups, the six-wheel rover could take its first short drive and flex its robotic arm.

The landing site near Mars’ equator was picked because there are signs of past water everywhere, meeting one of the requirements for life as we know it. Inside Gale Crater is a 5-kilometre-high mountain, and images from space show the base appears rich in minerals that formed in the presence of water.

Previous trips to Mars have uncovered ice near the Martian north pole and evidence that water once flowed when the planet was wetter and toastier unlike today’s harsh, frigid desert environment.

Curiosity’s goal: to scour for basic ingredients essential for life including carbon, nitrogen, phosphorus, sulfur and oxygen. It’s not equipped to search for living or fossil microorganisms. To get a definitive answer, a future mission needs to fly Martian rocks and soil back to Earth to be examined by powerful laboratories.

The mission comes as NASA retools its Mars exploration strategy. Faced with tough economic times, the space agency pulled out of partnership with the European Space Agency to land a rock-collecting rover in 2018. The Europeans have since teamed with the Russians as NASA decides on a new roadmap.

Despite Mars’ reputation as a spacecraft graveyard, humans continue their love affair with the planet, lobbing spacecraft in search of clues about its early history. Out of more than three dozen attempts flybys, orbiters and landings by the U.S., Soviet Union, Europe and Japan since the 1960s, more than half have ended disastrously.

One NASA rover that defied expectations is Opportunity, which is still busy wheeling around the rim of a crater in the Martian southern hemisphere eight years later.

What will astronauts eat in Mars?

       As NASA gears up for a manned Mars mission in 2030s, the agency is now building a menu for the planned journey.

The menu must sustain six to eight astronauts, keep them healthy and offer a broad array of food. That’s no simple feat considering it will likely take six months to get to the Red Planet, astronauts will have to stay there 18 months, and then it will take another six months to return to Earth. Imagine having to shop for a family’s three-year supply of groceries all at once.

“Mars is different just because it’s so far away,” said Maya Cooper, a senior research scientist who is leading the efforts to build the menu. “We don’t have the option to send a vehicle with more food every six months as we do for the International Space Station.”

Astronauts who travel to the space station have a wide variety of food available to them, with around 100 different options. However, it is all pre-prepared and freeze-dried with a shelf life of at least two years. While the astronauts make up a panel that tastes the food and gives it a final OK before it blasts off, the lack of gravity means smell and taste is impaired so the food tastes bland.

What's cooking in Mars?

Still, on Mars there is a little gravity, which allows NASA to consider significant changes to the current space menu. That’s where Cooper’s team comes in. Travel to Mars opens the possibility that astronauts can do things like chop vegetables and do a little cooking of their own. Even though pressure levels are different to those on Earth, scientists think it will even be possible to boil water with a pressure cooker.

One option Cooper and her staff are considering is having the astronauts care for a “Martian greenhouse.” They would have a variety of fruits and vegetables from carrots to bell peppers in a hydroponic solution, meaning they would be planted in mineral-laced water instead of soil. The astronauts would care for their garden and then use those ingredients - combined with others such as nuts and spices - brought from Earth to prepare their meals.

The top priority is to ensure that the astronauts get the proper amount of nutrients, calories and minerals to maintain their physical health and performance for the life of the mission, Cooper said.

The menu must also ensure the psychological health of the astronauts, Cooper explained, noting studies have shown that eating certain foods such as meatloaf and mashed potatoes or turkey on Thanksgiving improve people’s mood and give them satisfaction. That “link to home” will be important to astronauts on the Mars mission, and there are currently two academic studies looking further into the connection between food and disposition.

Jerry Linenger, a retired astronaut who spent 132 days on the Russian space station in 1997, said the monotony of eating the same thing day after day is difficult. “You just wanted something different. I didn’t care if it was something I wouldn’t eat in a million years on Earth. If it was different, I would eat it,” Linenger said, recalling with a laugh how he would even drink up a Russian sour milk-like concoction for breakfast or drink some borscht because it offered variety.

Go veggie in Mars

Cooper’s team of three has already come up with about 100 recipes, all vegetarian because the astronauts will not have dairy or meat products available.

To ensure the vegetarian diet packs the right amount of protein, the researchers are designing a variety of dishes that include tofu and nuts, including a Thai pizza that has no cheese but is covered with carrots, red peppers, mushrooms, scallions, peanuts and a homemade sauce that has a spicy kick.

To keep this menu going, and get the most out of any research about food sustainability on Mars, Cooper says it is possible NASA will choose to have one astronaut solely dedicated to preparing the food.

Cooper is also building an alternate pre-packaged menu, similar to the ones for crews that do six-month stints on the International Space Station. For this option, however, the food will need to have a five-year shelf life compared with the two years now available. NASA, the Department of Defence and a variety of other agencies are researching ways to make that possible, said Cooper.

Will NASA get the fund?

One of the biggest obstacles at the moment may be the budgetary constraints. President Barack Obama’s budget proposal in February cancelled a joint US-European robotic mission to Mars in 2016, and the rest of NASA’s budget has also been cut.

At the moment, Michele Perchonok, advanced food technology project scientist at NASA, said about $1 million on average is spent annually on researching and building the Mars menu. NASA’s overall budget in 2012 is more than $17 billion.

The mission is important - it will give scientists the opportunity for unique research on everything from looking for other life forms and for the origin of life on Earth to the effects of partial gravity on bone loss. It will also let food scientists examine the question of sustainability. “How do we sustain the crew, 100 percent recycling of everything for that two and a half years?” Perchonok said.

High on Higgs

 

            The Hindu Archana Sharma: An inspiration for Indian scientists. Photo: Special Arrangement

‘I never thought I would end up at the Mecca of particle physics.’ Archana Sharma, the only Indian scientist in the Higgs Boson team, talks about her journey to CERN.

The Higgs Boson experiment at CERN has created a huge buzz over the past few weeks, but it’s been even more exciting to find an Indian connection to it. Archana Sharma is the only Indian scientist who has been involved in the Higgs Boson experiment. Currently a Staff Physicist at the CERN headquarters in Geneva, Switzerland, Archana finished her post-graduation from the Banaras Hindu University and her doctorate from Delhi University. She moved to Geneva for her post doctoral research.

Over a career of 23 years, all of which has been with CERN one way or the other, she has helped make CERN accessible to Indian students by facilitating student visits and providing prestigious internships. She lives with her husband in a tiny village called Russin close to CERN. Excerpts from an interview

What was your individual contribution to the CERN effort in finding the Higgs Boson?

My contribution to the CERN R&D effort has been at various levels over the years. The CERN effort is the culmination of a large number of scientists across the world and I am just one of them. Being the only permanent Indian staff at the CERN facility is a matter of pride and privilege. I worked on design and prototyping the present generation of “muon” detectors currently operational. These are crucial for the “gold plated” discovery channel for the Higgs Boson. My major task is developing radiation hard detectors for CMS for sustained operation at LHC upgrades in this decade and the next.

How did you address the challenges of being part of the CERN facility?

The initial phase was a bit tough. I was still completing studies and working at CERN on detector development, and this was quite challenging especially because I was in a foreign country with very few Indians. At that time we were a young family and there was a point where I wouldn’t do justice to anything and I felt like giving up quite a few times. It was also daunting partly because of the complexity of instrumentation and the experiments. The day to day challenges of information management, laboratory schedules learning and progressing in a foreign land was massive. I am glad I overcame it. Obviously, my family was the backbone for my success here.  

How did you address obstacles of being a woman through your academic career from India to Geneva?

Growing up as a girl in Jhansi and studying at St. Francis’ Convent, I never thought I would end up at the Mecca of particle physics. Just like any other middle class kid in India, education and emphasis on career was the only way to salvation. With both parents being teachers, the focus on performance was immense. I never dreamt of becoming a doctor or engineer, which was the pinnacle of doing well those days. My dreams lay more on the basis of being able to do something meaningful and impactful in life than to just earn money.

Being a woman made it even more challenging, given the social norms, but the support of my parents, close family and teachers was overwhelming. It made me what I am today. I chose Nuclear Physics against electronics and solid state physics at BHU simply due to the “outstanding” set of teachers. I always admired women who worked through adversities and did pioneering work. In addition, my mother is the epitome, of diligence! My father had an amazing confidence in my abilities; I wish he was here today!

Do you find more women coming through the ranks in the Indian scientific establishment?

Absolutely. Women scientists have come a long way in India. From being liabilities and ostracised, I find that many are interested in science. Parents are also excited about careers for women in science. There are also sufficient role models for them to look up to. In my current batch of interns from India, 75 per cent are girls! On an average, about 50 per cent of the Indian contingent on interns are women, which is quite telling in terms of selection criteria. I see a very bright future for Indian women in science!

You have helped Indian students intern at CERN over the years. Did you always want to give back to the country and its people?

Being in this privileged position, it was only natural. I always felt it would be beneficial for the students and it is always a pleasure to help them. Giving students an opportunity to see hands-on technology, talk to the best in the field, attend seminars by Nobel laureates, the work culture, team work and international environment helps their dreams grow. Each student represents an enormous potential; I can only be happy that I have contributed towards unleashing that potential.

Lastly, your advice to aspiring Indian scientists?

Dream and it is possible. I firmly believe that more and more scientists from India will be contributing to this effort. India’s contribution to the CERN facility is already quite substantial, and can be taken to another level. Around 150 Indian scientists have been associated in one way or another and, in the last few years, collaborations with Indian institutions and universities have grown dramatically.

Indian youngsters have the potential and I truly hope many aspiring scientists make it here to then give back a tiny bit so that the spiral of progress can continue.  There is something for every aspiring scientist to do; however small, however big. I firmly believe that every one who wants to can participate and contribute.

Post title

 

           Rajivalochan Subramaniam at CERN (bottom right). Photo: Special arrangement

Rajivalochan Subramaniam found that his real goal actually lay in high energy physics. Here's how he found it.

Born and brought up at West Mambalam in Chennai, Rajivalochan Subramaniam considered himself a failure at a U.S. university before rediscovering himself in the field of high energy physics. A Ph.D was once a distant dream for Rajiv. It is the support of his father A. Subramanian, a retired government officer, and mother Latha and his grandparents, that has enabled him to pursue his dream at CERN, Geneva.

After schooling at Sri Sitaram Vidyalaya (2001) and Shri Ahobila Mutt Oriental School (2003) in West Mambalam, where he grew up on mathematics, he studied Electrical and Electronics Engineering at the Bannari Amman Institute of Technology at Sathyamangalam. His final-year project was funded by the Tamil Nadu State Council for Science and Technology in 2007.

In August 2008, Rajiv joined the Electrical Engineering Master’s programme at Louisiana Tech University, USA, where he got partial scholarship.

In the U.S., there is an option to design one’s master’s curriculum, and Rajiv chose a combination of research and academics. “A majority of Indian students at the university chose the academics option as most of them are interested in a job. Having made a tough decision, I struggled during my first year of MS,” he says. The open book tests were more difficult than the closed book ones and the research work in electrodynamics made no sense to him. After nine months he quit that research, realising he was not cut out for electrodynamics. This statement of Einstein came to his mind then: Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid. “One year on American soil ended in the Fall of 2009. All of my educational loan was spent and I was depleted financially and morally. My self-confidence was very low during this time as I considered myself a failure,” recalls Rajiv.

It was during this hard period that he met his current adviser/professor Dr. Markus Wobisch who is involved in high energy physics. At that time he did not know that his life was going to change. Prof. Wobisch was working with the U.S. Fermi National Lab located in Chicago and Rajiv’s electrical background was good for high energy physics research. “Even for the very minor results that I showed him, he encouraged me to such an extent that I really gained confidence in life.”

This moral support pushed him to become a successful Ph.D student. Seeing his progress, the department chair, Dr. Lee Sawyer decided to involve him in mankind’s biggest collaborative experiment, the Large Hadron Collider (LHC). And that is how he started working at the ATLAS detector at the European Center for Nuclear Research (CERN), Geneva, exactly two years before the discovery of the Higgs boson-like particle.

In July 2010, he arrived at CERN. CERN is an underground lab which spans the Franco-Swiss border with a circumference of 27 km and is 100 metres under the ground.

At CERN, students, academicians and scientists do collaborative work for common goals. CERN tries to answer fundamental questions about the universe. The Standard Model is a basic model in modern physics. It lists and classifies all fundamental particles and forces, many of which were discovered at CERN. There were many parallel experiments at CERN and one of the main goals was to search for the Higgs boson.

The universe is filled with a field called the Higgs Field and the particles of the field are called Higgs bosons. Assume that a swimming pool is the universe and a HO molecule is equivalent to a Higgs Boson. As you cannot see water molecule in a swimming pool you cannot see the Higgs boson in the Higgs Field.

About 48 years ago, Peter Higgs and a few other scientists postulated this theory. The mathematics behind the theory was so wonderful that people started liking it .When most scientists agreed on the idea and were able to convince governments, the Large Hadron Collider (LHC) experiment came to life in 1990.

The Indian government has spent USD 40 million for the experiment and about 100 Indians have played a substantial role in the experiment. The total budget of the project is $10 billion. It took 20 years of hard work by over 10,000 scientists around the world to build these pyramids of the 21st Century. Along with students from India, other Indians studying in the U.S. and universities around the world also contribute to a great extent.

“After years of hard work we started taking data in 2010 March. By the end of 2011, there was no success but we got a few hints about the mass of the particle. In 2012 March-June, we started seeing positive results,” says Rajiv who personally contributed by selecting the interesting data to be recorded for detailed study, called “trigger system” in scientific terms.

Darkness no more!

      Say solar: An eco-friendly choice.

Project Suryaprakash helps to light up villages in Maharashtra

Two Maharashtra villages recently experienced electricity for the first time — thanks to Tata Power Community Development Trust’s (TPCDT) new initiative ‘Project Suryaprakash’. Remotely located Limbarvadi and Bhadaskonda villages in the Mulshi region of Pune benefitted from the project.

The project is one of the initiatives to facilitate the implementation of a NABARD scheme of solar energy based home lighting system (HLS). It is being provided technological support by Tata BP Solar.

“Project Suryaprakash was launched with an aim to empower the existing network of self help groups (SHGs) in the process of creating awareness and making HLS accessible to communities. As the existing network of SHG comprises mostly women, the project has been designed to empower womenfolk. Training programmes have been designed for the beneficiaries and the trainees. Mostly women will be assisting the Tata team in the installation process,” a company release stated. 

The uniqueness of the project is that the villagers themselves are doing the entire funding, training, operations and maintenance jobs and TPCDT has only been a facilitator by tying up with NABARD for government subsidy and bank loans.

According to the model, the SHG will be running the scheme, employing two persons and will be responsible for repayment of loans. TPCDT also plans to sign a memorandum of understanding with Bank of Maharashtra for financing the project.

S. Padmanabhan, chairman of TPCDT, said that the project aims at lighting up 1,000 households of various communities in Maharashtra. “We look forward to the support of various stakeholders who will be instrumental in fulfilling the lighting requirements of the targeted number of households,” he added. 

Animal death toll in Kaziranga rises to 560

 

           AP A deer lies dead on a street near Kaziranga National Park in Guwahati on Saturday.

At least 560 animals, including 14 one-horned rhinos, have perished in the world-famed Kaziranga National Park during the ongoing floods in Assam.

Hog deer have suffered the most with 481 of them killed in the current floods, while 10 swamp deer, 18 sambars, 36 wild boars, five porcupines, two hog badgers, two gaurs (Indian bison), two wild buffaloes and a fox have also perished in the deluge, Assam Forest and Environment Minister Rockybul Hussain said today.

The UNESCO World Heritage Park, which hosts two-thirds of the world’s Great One-horned rhinos, was still flooded though the water was receding and more carcasses were found floating.

Speeding vehicles have also claimed the lives of about 25 hog deer, while two rhinos were killed by poachers.

The Park, located on the edge of the Eastern Himalaya biodiversity hotspot, has been flooded since June 26 and within a couple of days nearly 80 per cent of its 430 km area was inundated with only the natural and artificial highlands spared where the animals fled for shelter.

The Park, which experiences floods annually, has earlier suffered extensively in 1988 when 1023 animals had died and again in 1998 when 652 animals had perished.

The devastating floods have also caused extensive damage to roads, bridges and approaches to bridges though the actual extent of the damage was yet to be ascertained, he said.

Meanwhile, Assam Chief Minister Tarun Gogoi has appealed the Prime Minister for Rs two crore for infrastructural development in the forest department, Hussain added.

ICRISAT chief for cultivation of GM crops

‘Biotechnology is an efficient scientific solution to increase crop productivity, enhance income for small farmers’

William D. Dar, Director General of International Crops Research Institute for Semi-Arid Tropics (ICRISAT), has said that biotechnology will pay an indispensable role in empowering the rural sector by helping increasing the food production multi-fold to meet the needs.

Speaking at a workshop organised by the Federation of Indian Chambers of Commerce and Industry (FICCI) here on Friday, Dr. Dar said biotechnology was an efficient scientific solution to increase crop productivity, to enhance income for small farmers and to improve nutrition in developing countries such as India.

“India is facing a paradoxical situation where it has over 60 million tonnes of foodgrain reserves on one hand and about 42 per cent of the country’s children are malnourished on the other due to lack of nutritious food,” he observed. There was a need to overcome such a strange situation, he felt by stressing the need to move beyond Bt cotton and embrace GM food crops, which could contribute the fight against poverty enormously.

Project Director of National Research Centre on Plant Biotechnology P. Anand Kumar said two golden rice varieties with vitamin-A -- Swarna and Jaya would be tested in open fields in 2013 and the Bt pigeon pea and chickpea would be released for field trials in 3-4 years.

Dinesh Kumar of Directorate of Oilseeds Research, S. Sivakumar of ITC Agribusiness Division, S.V.R. Rao of Nuziveedu Seeds and several others spoke.

Looking up to the sun

 

            The kitchen complex of the Shirdi ashram has 73 parabolic dishes to capture the sun’s rays.

India’s pilgrim centres, industries, learning centres and other institutions are increasingly looking to the sky for tapping solar energy for their kitchens that cater to thousands on a day-to-day basis. A look at the green move by M.A. Siraj

India has a large number of pilgrim centres that attract visitors from across the globe all round the year. It is a tradition that these centres, with large community kitchens, cater to the visiting clientele with variety food. Green sensibilities have entered these kitchens too, as they are tapping solar energy and slowly shedding the old energy-guzzling ways of cooking. A lot of industrial and commercial canteens are getting rid of their old ways of polluting the environment and have installed solar cooking systems.

The Saibaba Ashram at Shirdi in Maharashtra commissioned its giant solar cooking system in 2009. The kitchen complex of the Ashram has 73 parabolic dishes to capture the sun’s rays to run what is touted as the world’s largest solar cooking system to cook food for 50,000 devotees daily.

The system taps the sun’s rays to generate 3,600 kg of steam daily and saves nearly 100,000 kg of cooking gas annually. The system cost the Ashram Rs. 1.3 crore. Of this the Central Government’s non-renewable energy sector provided a Rs. 58 lakh as subsidy.

Steam cooking is clean, efficient and hygienic, especially when food is cooked for large numbers. The dish antennas concentrate solar rays on a giant reflector which transfers the heat to generate steam with temperature ranging between 550 and 600 degrees Celsius. With an automated sun tracking system, the dishes rotate continuously along with the movement of the sun, always concentrating the solar rays on the receivers. However, the dishes have to be manually rotated back each evening to the east in line with the rising sun for the next morning. As the solar system is hooked up with boilers, it can take care of a few non-sunshine hours too. But a back-up is needed for prolonged spell of rainy and cloudy days.

Emission reduction credits

At the solar-operated Tirumala Tirupati Devasthanam kitchen at Tirupati where food is cooked daily for 15,000 pilgrims, the system installed in 2002 atop the shrine’s ‘Nitya Annadanam Canteen’ has adopted the solar cooking technology to drastically cut down on diesel fuel it was using till then.

The temple now sells the emission reduction credits it earns to a Swiss green energy technology investor firm, Good Energies Inc.

It not only takes care of energy and ecology but is also a source of revenue for the temple. The shrine now saves Rs. 17 lakh per annum. The system reduces the carbon dioxide emission by 1.2 tonnes per day.

The system, costing Rs. 1.1 crore, had its managing body, the Tirumala Tirupati Devasthanam Board, contributing half the amount while another half came as a subsidy from the Ministry of New and Renewable Energy. The solar cooking system in both these shrines was installed by Gadhia Solar Energy Systems (GSES), a Gujarat-based company.

The initiative

Gadhia Solar was set up by entrepreneur Deepak Gadhia who brought the parabolic dishes-based solar concentrators (developed by Austrian scientist Wolfgang Scheffler) and began manufacturing solar cookers at his unit at Valsad near Mumbai.

The ingenuity behind the work was identified by Rajiv Gandhi while on a visit to Germany in 1984 when Gadhia was working on heat recovery and water harvesting system in a German University.

Responding to the invitation of the Indian Investment Office under the then PMO, Gadhia and team settled down in India.

For industrial canteens

While mass cooking facilities at several shrines gave them a big break, they also set up such facilities for industrial canteens at IBM, Bangalore; Sanghi Industries, Hyderabad; Pricol Industries, Coimbatore; and public sector companies such as GACL and GSFC and also at several residential schools, Defence establishments and hospitals.

Says Gadhia, “ Temples were more open to idea of using heavenly energy for cooking, as they also had large numbers coming in for prasad. These systems are more viable there. But once the systems were installed, we soon moved on to other target groups.”

These cooking/heating facilities show the way India should go in tapping new energy sources as the country’s current installed capacity of 147,458 MW is still eight per cent short of the demand of power.

Demand growing

Energy expert A. Ravindra says demand is growing by eight per cent annually and conventional fuels are getting exhausted. It was only in 2008 that investments in the renewable energy sector in India exceeded those in the fossil fuel sector.

Following the lead of the shrine at Tirumala, the Brahmakumari Instituteat Abu Road in Rajasthan installed a solar cooking system to cook food for 10,000 persons daily in 2005.

Rishi Valley Residential School at Madanapalle, 220 km east of Bangalore, has also installed a solar cooking system for its kitchen which prepares food for 500 inmate-students.

The School’s Dining Manager Harindran says the system serves them for 300 sunny days and saves them nearly Rs. 2 lakh annually on cooking gas.

The Art of Living Foundation in Bangalore is also generating power through biogas plants and recycling the wastewater within their premises.

Other applications

Gadhia’s company has developed several applications for solar concentrators (besides cooking) such as for wastewater evaporation, air-conditioning, desalination, heating and cooling, solar incinerators for bio-medical waste for hospitals, solar crematoriums, solar driers etc. Solar systems for housing colonies and blocks are amenable to multi-tasking and can be used for heating water for bathing, for preparing drinking water (pasteurisation), desalination, steam cooking, air-conditioning and for power generation with micro-turbines.

“By doing such projects we reduce the cost of products for individuals. It is similar to having a central TV antenna instead of every household having its own antenna.

It reduces the cost and improves the efficiency and optimises the use of systems,” observes Deepak Gadhia.

The possibilities

India is blessed with abundant sunshine which offers ample opportunity to tap solar energy for the country’s growing needs. It is estimated that if solar panels were installed on only four per cent area of Thar desert in Rajasthan, India can generate power to the tune of 100,000 MW, about two-thirds of its present installed capacity. Thar desert sprawls over an area of nearly 200,000 sq. km.

God exists

Scientists at the CERN research centre near Geneva on Wednesday unveiled their latest findings in their search for the Higgs boson, a subatomic particle key to the formation of stars, planets and eventually life after the Big Bang 13.7 billion years ago. Some facts about the ‘God particle’:
What is the Higgs Boson?
The particle is theoretical, first posited in 1964 by six physicists, including Briton Peter Higgs. It is the last missing piece of the Standard Model, the theory that describes the basic building blocks of the universe. The other 11 particles predicted by the model have been found and finding the Higgs would validate the model. Ruling it out or finding something more exotic would force a rethink on how the universe is put together.
What is the Standard Model?
It is the best explanation physicists have of how the building blocks of the universe are put together. It describes 12 fundamental particles, governed by four basic forces. But the Standard Model only explains a small part of it. Scientists have spotted a gap between what we can see and what must be out there. That gap must be filled by something we don’t fully understand, which they have dubbed ‘dark matter’. Galaxies are also hurtling away from each other faster than the forces we know about suggest they should. This gap is filled by ‘dark energy’. This poorly understood pair are believed to make up a whopping 96 per cent of the mass and energy of the cosmos. Confirming the Standard Model, or perhaps modifying it, would be a step towards a ‘theory of everything’ that encompasses dark matter, dark energy and the force of gravity, which the Standard Model does not explain.

God particle-Higgs&Bose in Higgs Boson

 

Satyendra Nath Bose
The sub-atomic particle “boson” is named after Bengali physicist Satyendra Nath Bose whose pioneering work in the field in the early 1920s changed the way particle physics has been studied. The work done by Bose and Albert Einstein laid the foundation for the discovery of the God particle. While paying tribute to Bose’s work, Paolo Giubellino, a CERN spokesperson, had said back in October last year, that “India is like a historic father of the project”. Bose specialised in mathematical physics. A Fellow of the Royal Society, he was awarded the Padma Vibhushan in 1954. Bose was born in Calcutta, the eldest of seven children. His father, Bose, worked in the Engineering Department of the East Indian Railway Company. Bose never received a doctorate, nor was he awarded a Nobel Prize, though the Nobel committee recognised other scientists for research related to concepts he developed.

Peter Higgs
Higgs is best known for his 1960s proposal of broken symmetry in electroweak theory, explaining the origin of mass of elementary particles in general and of the W and Z bosons in particular. This Higgs mechanism predicts the existence of a new particle, the Higgs boson — which derives its first name from him. Higgs was born in Wallsend, North Tyneside, England. His father worked as a sound engineer for the BBC. Higgs was a professor at the University of Edinburgh.
Higgs paper about his theory was initially rejected. But this was a blessing in disguise, since it led Higgs to add a paragraph introducing the now-famous Higgs particle. In 1964, Higgs wrote two papers on what is now known as the Higgs field. The journal Physics Letters accepted the first but sent the second back. After adding a paragraph predicting the new particle, he submitted the paper to competing journal Physical Review Letters, which published it.

Scientists may announce discovery of Higgs Boson

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The painting shows how a Higgs boson may look. Scientists at CERN plan to make an announcement on Wednesday - AP file photo

It has been fancifully dubbed the angel of creation and, to the particular scorn of physicists, the god particle.
The Higgs Boson is said to have appeared out of the chaos of the Big Bang 13.7 billion years ago and turned the flying debris from that primeval explosion into galaxies, stars, and planets.
Its formal discovery, according to a broad scientific consensus, would be the greatest advance in knowledge of the universe in decades.
But until now, in the four decades of research since its existence was first posited, no-one has claimed to have more than seen a hint of the Higgs Boson.
This may be about to change.
On Wednesday at the CERN particle physics research centre near Geneva, two separate teams of 'Higgs Hunters' - a term they profess to hate - may well announce they have spotted it.
Or at least something that looks incredibly like it.
"Think of it as a smoking duck," says Oliver Buchmueller, a senior scientist on one of the teams, the CMS.
"If it walks like a Higgs and it quacks like a Higgs, then we would have to at least consider the possibility that we have a prominent new member of the Boson family on our hands."
The Higgs Boson is a vital component of the 'Standard Model' - the all-encompassing 30-year-old scientific theory of how the universe works at the simplest level.
Without it, says U.S. physicist Matt Strassler, "nothing like human beings, or the earth we live on, could exist".
Why a Boson
Why is it called a Boson? Because elementary particles, the building blocks of the cosmos, come in two types - bosons and fermions - and the Higgs has been assigned to the first.
Physicists say the particle is like a wave from what would be the otherwise invisible Higgs field and would provide prime evidence that that underlying force is there.
Buchmueller, like all scientists at CERN, is silent on what might be revealed on July 4 by scientists who have analysed the product of many trillions of mini-big bangs created over the past two years in CERN's Large Hadron Collider (LHC).
"We will all just have to be patient till Wednesday," says Pauline Gagnon, a Canadian physicist on CMS' rival team Atlas, blogging from a big particle physics conference in Australia.
Last December, CMS and Atlas told a similar seminar at the sprawling CERN campus on the Swiss-French border, that they had seen "tantalising glimpses" of what could be the boson, named after 82-year-old British theoretical physicist Peter Higgs.
Since then, power in the underground LHC has been ramped up and the rate of almost light-speed particle collisions in it has been tripled in an attempt to produce something more definite.
A sense that "something" has been seen has been bolstered not only by the announcement of the CERN seminar and a live video feed to the Melbourne congress but by other linked events scheduled around the globe.
New York's Columbia University said it was holding an early-hours pyjama party in the hope of seeing "sub-atomic fireworks".
Various forms
In London, a concert hall across from the Houses of Parliament has been booked for a similar, but daytime, event. Japanese, Russian and Chinese scientists will be watching too.
At the U.S. Fermilab near Chicago, where scientists spent three decades looking for the Higgs in their Tevatron collider which was shut down last December as Washington cut off funds, another seminar has been set for Monday.
That gathering, according to the centre's daily bulletin, will hear the final "Higgs results" from the Tevatron, a much less powerful machine than the mighty LHC.
But just what will be announced at CERN - and Fermilab - remains far from clear.
To claim a discovery, scientists have to have a "5 sigma" certainty - or be sure that there is less than a one in a million chance it is a fluke.
The Higgs, both field and boson, could come in various forms, specialists say, and although one type may have been seen it may yet take time to determine exactly which one it is.
The question will probably remain open on whether it is a Standard Model version, or something else that will take scientists into the science fiction realms of "New Physics".
"It could prove to be a single child or have siblings, and what its hair colour or genetic code is would remain to be established before we know its true nature," said Buchmueller.

"This is just the beginning of a long journey"

R. Ramachandran

“As a layman, we have it,” is what Rolf Heur, Director-General of CERN, said at the end of the seminar

Yes. The long-sought Higgs boson, dubbed by lay media as ‘God Particle’ much to the dislike and discomfiture of scientists, may have been discovered. This essentially was the take home message of the much publicised and keenly awaited seminar on Wednesday at CERN, the Geneva-based European Centre for Nuclear Research. CERN houses the huge underground 27 km-long ringed particle accelerator called the Large Hadron Collider (LHC) with the search for the Higgs particle as one of its main goals.

Graphic: New particle could be Higgs boson

The Higgs boson, hypothesised in the 1960s by three groups of scientists (Peter Higgs and five others) independently, is the crucial missing piece in an otherwise enormously successful theoretical framework called the Standard Model which accurately describes the fundamental particles and forces of nature. The masses of fundamental particles of nature are determined by the strengths of their interaction with Higgs. Without the Higgs particle matter in the universe will have no mass. So its existence is a vital cornerstone for describing the universe correctly.

For the lay public at large, the uncertainty signified by the use of ‘may’ above does not really matter as it arises purely from technical considerations. The two key experiments at the LHC – CMS and ATLAS – designed to look for the hypothesised Higgs particle have found unambiguous signals for the observation of a new boson. This new particle waddles like a Higgs and quacks like a Higgs. But is it the Higgs particle of the Standard Model that scientists have been searching for the last nearly four decades? At this point of time, however, LHC scientists would like to duck the question. They would like to ascertain other characteristics of the new particle before definitively dubbing it as the Standard Model Higgs.

“As a layman, we have it,” is indeed what Rolf Heur, the Director-General of CERN, said at the end of the seminar. But more correctly, he added: “[We have] observed a new particle consistent with a Higgs boson. There is a lot of work ahead of us. We also now know which direction to go. This is just the beginning of a long journey.” At the press conference that followed the seminar, Joe Incandela, the spokesperson for the CMS experiment clearly stated: “[Before the LHC shuts down for maintenance three months later], it would be difficult to say definitively that it is the Standard Model Higgs.”

While the LHC is designed to accelerate protons up to 7 TeV per beam (total collision energy of 14 TeV), since its commissioning in 2010, the beam energy has been gradually ramped up. After operating at 7 TeV (3.5 TeV per beam) till end-2011, it was increased to 4 TeV per beam (8 TeV of total energy) in April. This increase in energy, along with unprecedented performance of the accelerator, the detectors, improved techniques of analysis and the intense computation on the worldwide LHC computational grid established, is what has enabled this landmark finding within a short time of two and a quarter years since LHC went into operation.

In terms of numbers, till the end of 2011, the experiments took data from about 400 trillion proton-proton collisions at 7 TeV of total energy, when there were already tantalising hints of a Higgs-like signal at around a mass value of 125 G(iga) eV. (At relativistic energies, mass and energy are interchangeable in accordance with Einstein’s E=mc2 relation. So masses of particles are measured in units of energy. The mass of a proton is about 1 GeV.) But it was not statistically significant to call it a discovery of a particle. The statistical significance of the bump or excess of events around 125 GeV at end-2011 was only at the level of about 3 sigma, which means one-in-750 chance of being due to statistical fluctuation, which is far from the ‘golden rule’ for discovery of 5 sigma, which means there is only one-in-3.5 million chance of being wrong.

But the data taken in just 3 months (from April 5 to June 18) at 8 GeV of collision energy — from about 500 trillion proton-proton collisions — has surpassed the data taken in all of 2011 at 7 TeV. Moreover, the Standard Model predicts that at 8 TeV there is an enhancement in the probability of producing a Standard Model Higgs by a factor of 1.27, Aleandro Nisati of the ATLAS experiment said in an email response. So if you do the arithmetic of combining the effect of increased energy and that of higher proton-proton collision rate because of better accelerator performance, scientists now have 2.6 more Higgs-like events at 8 TeV for every Higgs-like event at 7 TeV in 2011.

All these have contributed to improved statistics in the data gathered, in particular for two of the five important decay channels available to Higgs — namely its decay into two photons and to four charged leptons (electrons/muons) — whose data were presented on Wednesday. These channels are considered important because these allow the Higgs mass to be measured with greater precision. The later is, in fact, called the Golden Channel because it is much cleaner compared to the other channels. The analysis had also been particularly optimised to pick Higgs-like events decaying into these final states, according to Nisati.

According to the presentations made on Wednesday by Joe Incandela and Fabiola Gianotti, the respective spokespersons of CMS and ATLAS respectively, both the experiments, which have worked entirely independently of each other, observed a “new particle” in the mass region around 125 – 126 GeV at 5 sigma level. The world physicist community had not really expected that the 5 sigma level would be attained so quickly. Both presented results from their analyses only of 2 photon and 4 lepton channels.

Specifically, the mass value given by CMS to this Higgs-like particle from is 125.6 GeV with an error window of 0.6 GeV, and that given by ATLAS is 125.3 GeV with an error bar of 0.6 GeV. It is clear that both the results are consistent with each other within experimental errors. The immediate next step for these experiments is first to analyze data from the remaining three channels of Higgs decay and check for consistency LHC before shuts down for maintenance. The larger task in months ahead is to ascertain whether the other properties of this new Higgs-like particle fit the predicted properties of the Higgs boson or is it something entirely different.

The process within the LHC

R. Ramachandran

 

At the Large Hadron Collider (LHC), two counter-rotating beams of protons accelerated to high energy are made to collide head-on to result in the creation of myriad particles, known and unknown. From the debris of trillions of such collisions, scientists look for signals characteristic of processes involving the Higgs boson. Higgs is a very short-lived particle with a lifetime of only about ten-thousandth of a billionth of a second. Once created, the Higgs boson will immediately decay into several channels and experiments analyse the final products of such decays and see if these really came from the decay of a Higgs boson.

What makes this task really tough is to be able to pick the right events from a large background of other processes from known physics that mimic the decay of Higgs.

A signal for Higgs means that, in a plot of events observed, a bump sticks out above the large background from other mimicking processes. But such excess of events should be statistically significant to be ascribed to a new entity such as Higgs.

That is, the bump should not be explainable by statistical fluctuation in the background if there were no Higgs, and it is indeed due to processes involving Higgs. Statistical significance is measured in terms of what is called standard deviation (called sigma).

For any discovery in particle physics, the signal should be at least at ‘5 sigma level’ over the background, which is equivalent to one in 3.5 million chance of the bump being due to statistical fluctuation.

Elusive particle found, looks like Higgs boson

• AP Rolf Heuer, Director-General of CERN, answers a journalist's question about the scientific seminar to deliver the latest update in the search for the Higgs boson in Meyrin near Geneva on Wednesday. 
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              AP British physicist Peter Higgs congratulates Fabiola Gianotti, ATLAS experiment spokesperson, after her results presentation during a scientific seminar to deliver the latest update in the search for the Higgs boson at the European Organisation for Nuclear Research (CERN) in Meyrin near Geneva on Wednesday 
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            AP Participants applaud after the presentation of the ATLAS experiments results during a scientific seminar to deliver the latest update in the search for the Higgs boson at the European Organisation for Nuclear Research in Meyrin near Geneva on Wednesday. 
   
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         AP A computer screen is pictured prior to a scientific seminar at CERN in Meyrin near Geneva on Wednesday. CERN's chief is claiming discovery of a new particle “consistent with the Higgs boson” known as the “God particle”.
   
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           AP In this May 20, 2011 file photo, a physicist explains the ATLAS experiment on a board at the European Center for Nuclear Research, CERN, outside Geneva, Switzerland. The illustration shows what the long-presumed Higgs boson particle is thought to look like. 
   
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             AP A view of the LHC (large hadron collider) in its tunnel at CERN near Geneva, Switzerland. File Photo

CERN physicists hail evidence of game-changing discovery of subatomic particle

Scientists at the world’s biggest atom smashing facility near here claimed the discovery of a new subatomic particle on Wednesday. They found it to be “consistent” with the long-sought Higgs boson, popularly known as the “God particle” that helps explain what gives size and shape to all matter in the universe.

Graphic: New particle could be Higgs boson

“We have now found the missing cornerstone of particle physics,” Rolf Heuer, Director of the European Centre for Nuclear Research (CERN), told scientists amid cheers and standing ovation. “As a layman, I think we did it,” he said. “We’ve a discovery. We’ve observed a new particle that is consistent with a Higgs boson.”

The Higgs boson, which until now was a theoretical particle, is seen as the key to understanding why matter has mass. It is mass that combines with gravity to give an object weight. The idea is much like gravity and Isaac Newton’s discovery of it. Gravity existed even before Newton explained it. But now scientists see something much like the Higgs boson and can put that knowledge to further use.

CERN’s atom smasher, the $10-billion Large Hadron Collider on the Swiss-French border, has for years been creating high-energy collisions of protons to investigate dark matter, antimatter and the creation of the universe, which many theorise occurred in a massive explosion known as the Big Bang.

Two independent teams at CERN said they had both “observed” a new subatomic particle, a boson. Dr. Heuer called it “most probably a Higgs boson, but we have to find out what kind of Higgs boson it is.”

Asked whether the find is a discovery, he answered: “As a layman, I think we have it. But as a scientist, I have to say, “’What do we have?’”

The leaders of the two CERN teams, Joe Incandela, head of CMS with 2,100 scientists, and Fabiola Gianotti, head of ATLAS with 3,000 scientists, each presented in complicated scientific terms what was essentially extremely strong evidence of a new particle.

Dr. Incandela said it was too soon to say definitively whether what has been discovered is indeed the “standard model” Higgs that Scottish physicist Peter Higgs and others predicted in the 1960s. They did that as part of a standard model theory of physics involving an energy field where particles interact with a key particle, the Higgs boson. “The” Higgs or “a” Higgs that was the question on Wednesday. “It is consistent with a Higgs boson as is needed for the standard model,” Dr. Heuer said. “We can only call it a Higgs boson, not the Higgs boson.”

“It is an incredible thing that it has happened in my lifetime,” he said, calling it a huge achievement for the proton-smashing collider built in a 27-km tunnel.

The stunning work elicited standing ovations and frequent applause at a packed auditorium in CERN as Dr. Gianotti and Dr. Incandela each took their turn. Dr. Incandela called it “a Higgs-like particle,” and said “we know it must be a boson and it’s the heaviest boson ever found.”

“Thanks, nature!” Dr. Gianotti said to laughs, giving credit for the discovery. Later, she said that “the standard model [of physics] is not complete,” but that “the dream is to find an ultimate theory that explains everything we are far from that.”

The phrase “God particle” was coined by Nobel Prize-winning physicist Leon Lederman but is used by laymen, not physicists, as an easier way to explain how the subatomic universe works and got started.

Dr. Incandela said the last undiscovered piece of the standard model could be a variant of the Higgs that was predicted, or something else that entirely changes the way scientists think of how matter is formed. “This boson is a very profound thing we’ve found,” he said. “We’re reaching into the fabric of the universe in a way we never have done before. We’ve kind of completed one particle’s story... now, we’re way out on the edge of exploration.”