BOOMERANG Wows CosmologyFurther evidence for a flat universeBy Paul Preuss
The impressive results came from the international BOOMERANG consortium's Long Duration Ballooning experiment, which for 10 and a half days flew an instrument package around the South Pole. Wafted by the "stratospheric polar vortex," the balloon boomeranged almost back to its starting place early in January 1999, having made a billion measurements of the sky along the way. Each measurement took the temperature of the CMB, which averages only 2.73 degrees Kelvin above absolute zero. Tiny variations in this average -- one part in a 100,000 warmer or cooler -- reveal the nascent structures of the early universe and shed light on its overall geometry. Well over a year was spent sifting through the enormous dataset. At NERSC, cosmologist Julian Borrill of the BOOME-RANG team developed a special program called MADCAP (microwave anisotropy dataset computational analysis package), which he ran for hundreds of hours on the 696-node Cray T3E to extract the CMB's angular power spectrum, the plum in the cosmic pudding. The power spectrum derived at NERSC directly inspired Turner's first wow, "Euclid was right, space is flat," and indirectly his second wow, support for inflation theory. The best explanation for flatness posits that the universe we live in is only a tiny region of the original cosmos, a patch that "inflated" uniformly and rapidly in the first instants after the Big Bang. When BOOMERANG results are plotted against studies of distant supernovae, such as those by the Supernova Cosmology Project, the evidence converges to indicate that about 35 percent of the universe is made up of matter, both visible and dark, while the remaining 65 percent is made up of the mysterious "dark energy," the cause of the universe's accelerating expansion. BOOMERANG's fine-grained CMB map and the power spectrum derived from it make these deductions possible. In the 1990s, George Smoot of the Physics Division and UC Berkeley, with his colleagues, mapped the whole sky using the COBE satellite. BOOMERANG looked at only 3 percent of the sky. But COBE's resolution was 10 degrees, just enough to rough out the CMB's largest features; BOOMERANG's resolution is over 40 times as good and extends the power spectrum well past the major peak in the curve that indicates a flat universe. "We have to reduce the thousands of pixels in the map to a dozen or so numbers, representing different points along the power spectrum curve, and see how they fit to curves characteristic of different models of the universe," says Andrew Jaffe of UC Berkeley, a BOOM-ERANG team member who worked with Borrill on the analysis. Borrill notes that "the MADCAP program finds the power at each angular scale at each of these points along the curve." He points out that the BOOMERANG data is so noise-free at the angular scales examined that virtually the only uncertainty represented by the remarkably small error bars comes from extrapolating the results to the whole sky. Measurements by another balloon-borne experiment have also been analyzed at NERSC and will soon allow comparison of BOOMERANG to a section of the northern sky. The MAXIMA project is headed by Paul L. Richards of UC Berkeley and Berkeley Lab's Materials Sciences Division. When NASA's MAP satellite flies later this year, it will extend BOOMERANG-scale precision to the entire sky. "The dataset from MAP will be an order of magnitude bigger than BOOMERANG's," says Borrill. Even with the awesome power of NERSC's supercomputers, new computational strategies will be needed. "This is only the beginning" of an exciting new cosmology, said Michael Turner -- his third wow. At very fine resolution, for example, the polarization of the microwave background could provide evidence of primordial gravity waves, another prediction of inflation theory. BOOMERANG and MAXIMA both hope to fly again later this year to see whether it is possible to detect the CMB's polarization. BOOMERANG's principal investigators are Andrew Lange of Caltech and Paolo deBernardis of the University of Rome. In the United States the project was supported by the National Science Foundation, NASA, and -- through NERSC -- the Department of Energy.
For more information see the BOOMERANG websitee at http://www.physics.ucsb.edu/~boomerang/. Currents ran a story on the BOOM-ERANG test flight in the Dec 3, 1999 issue, available on the web at http:// www.lbl.gov/Publications/Currents/ Archive/Dec-03-1999.html#RTFToC5. And for more about NERSC's analysis, see http://www.lbl.gov/Science-Articles/Archive/boomerang-flat.html .
Riding to Save LivesBy Jon Bashor
Steve Nobles of the Lab's Networking and Telecommunications Department and his wife are already deep into their summer vacation plans: spending a week taking the coastal route from San Francisco to Los Angeles. But theirs is no ordinary jaunt. Nobles will be one of about 3,000 bicyclists taking part in the California AIDS Ride, which last year raised $11 million to benefit AIDS research and support programs in California. While Nobles will pedal his way along the 573-mile route, his wife will be working as a volunteer to help with the massive logistical support needed. To make the trip, Nobles is now focusing on two areas -- getting in shape for the grueling ride and raising funds from friends and family members. "I'm training every weekend, riding about 60 miles a day and getting ready to jump up to 80 miles," says Nobles. "It's a challenge, but it's a lot easier than raising money." Although this will be his first time making the ride on a bike, Nobles knows what he's getting into. Last year, he and his wife volunteered at the urging of another couple, who were making the ride on a tandem bike. Nobles was officially known as the "Pit Closer," but soon the riders started to call him "The Ride Reaper." It was his responsibility to send riders back to camp on the bus if he felt they couldn't finish the ride on time. Over the course of that week Nobles talked to many of the participants and learned that each had a different and deeply personal reason for getting involved. In a letter he sent out seeking pledges he wrote: "I was amazed at how many people have had AIDS affect someone near to them. I'm not just talking about gay men or IV drug users. I'm talking about men, women, and children of all races, colors and lifestyles. Before the ride, I was walking around with my eyes shut, not paying attention to how many people have been claimed by this disease. "Some of the riders had AIDS themselves. Some riders had friends and family living with AIDS, or friends and family that had been struck down by AIDS. Others felt compelled by the overwhelming statistics of the disease to do something about it. I guess that's where I fit in. Although I know and have known people with AIDS, it hasn't taken someone in my direct family or close circle of friends. But after the ride, I know that it is only a matter of time before it does." Among the people Nobles met last year was a man whose sister and nephew both died of AIDS. The sister contracted the virus during her pregnancy, when a problem required pre-natal surgery. This happened in the 1980s, before more stringent blood-screening measures were in place. Both the woman and her unborn son became infected through a blood transfusion. She died within a year of giving birth; the boy lived with his uncle for seven years before dying from AIDS-related problems himself. "The man has ridden in the California AIDS Ride every year since Jason's death," Nobles said. "He makes the ride with an empty child's bike trailer attached to his bike. He told me, `It's the only thing that has kept me going. I loved them both so much.'" Another woman told Nobles how she contracted HIV from her boyfriend, who was stationed overseas in the military and home on leave. "She seemed like a very strong woman, a little older and wiser now, and totally resolved to survive and beat AIDS," Nobles said. "She also makes the ride every year; it gives her strength to fight." To make the ride Nobles needs to raise at least $2,500, but, he says, "I'd like to raise more." And that, he says, is the toughest part of his endeavor. "I can do everything to get my body and bike ready, and get the mindset I need to complete the ride, but the hardest thing that I know to do is to ask people to give up their hard-earned money. This is just one disease out of many that can come into our lives. Granted we may never get it ourselves, but at some point, it will affect someone we know and love."
To learn more about the AIDS Ride or to lend your support, contact Steve Nobles at [email protected]. Pledges can be made on line using a credit card at http://www.weborder.com/cgi-weborder/secure_form/sfaf/carfrm.html . (Nobles' rider number is 2271.) For more information about the California AIDS Ride see http://www.aidsride.org .
Open House 2000: Let the Celebration Begin!Gammasphere, Video Screening Among Popular AttractionsWe've talked about it, planned for it, volunteered our time and scratched our collective heads to find the best ways to make the Open House an unforgettable experience for all participants. Tomorrow it's going to be up to the thousands of visitors to decide how well Berkeley Lab succeed in achieving its goals. From 10 a.m. to 4 p.m. the Laboratory will open its doors to the public for a rare glimpse at the work being conducted here in four major general areas: particles and matter, biology and the life sciences, earth and environmental sciences, and computing. In these four theme areas, interactive displays have been developed with a special focus on school children. Young people will be able to seek answers to questions such as "How does a penny hold clues to the origin of the universe?" and "How can computers help to predict the world's changing climate?" Attractions will include tours of Lab facilities, a Career Center and Job Fair, presentations at the Science Discovery Theater, and a historic exhibit of artifacts that includes tools used by the Lab's nine Nobel Prize winners, including Ernest Lawrence and Glenn Seaborg. A presentation honoring several of the Bay Area's outstanding science teachers will take place at 12:15 p.m on the stage near the dining hall. Special events will include a 2 p.m. screening of "Me & Isaac Newton," a feature-length documentary by award-winning filmmaker Michael Apted. The film features seven scientists, including Berkeley Lab's Ashok Gadgil, who will be answer questions after the screening. (See sidebar for more on the documentary.)
During the past few days a team led by Augusto Macchiavelli of the Nuclear Science Division has been working hard in hopes of readying the Gammasphere for public viewing tomorrow. Visitors to the 88-inch Cyclotron will not only be able to learn something about how nuclear science is done, but will have a chance to appreciate its aesthetics as well. Besides being an exquisite experimental device, Gammasphere is also one of the most beautiful scientific tools ever built. The return of the Gammasphere, which will become operational later this summer, will be the subject of a story in a forthcoming issue of Currents. In the Life Sciences area, centers for body imaging and fruit fly genomics will be open for tours. Simulated bike rides through Yellowstone National Park will be part of the National Health Study exhibit. Children can become "junior gene sleuths" in a simulated analysis of human DNA. Other Open House exhibits will be found inside large canvas tents devoted to theme areas as well as in selected buildings that will be accessible by free shuttle buses. A color-coded map and program will be provided to all visitors to guide them their day-long explorations. Music and food will be available throughout the day at the cafeteria. And free parking and shuttle service will be provided from the main Berkeley BART station and from UC Berkeley campus lots along Hearst Avenue. So come on over, hop on a shuttle, and let the celebration begin.
Complete information on the program can be found on the Lab's Open House website at http://www.lbl.gov/OpenHouse/. You may also call the Open House hotline at (510) 495-2222 or look up the April 7 special Open House issue of Currents.
Washington ReportEnergy Department Open to Small Business Partners
At the first annual DOE Small Business Conference, held in Denver, Secretary of Energy Bill Richardson announced more than 250 contracting opportunities and outlined several new efforts to boost small business partnerships with the Department in the areas of science, environmental quality, energy resources, national security and administrative services. "We have already provided over $3 billion annually in opportunities for small businesses, but I think we can do better," said Richardson. "This announcement builds on our strong record with the small business community and sends a strong message that the Energy Department wants to do business with small businesses and companies." Richardson said the direct contract and subcontract opportunities included in DOE's semi-annual forecast of contracting opportunities for FY 2000 and FY 2001 will be worth approximately $2.4 billion over a three to five year period. More than half of these contracts are specifically targeted to small business firms. The Secretary also announced the permanent establishment of a DOE mentor-protégé program that will promote partnerships with minority educational institutions, women-owned businesses, and other small business concerns. NRC to be restructured The National Academies of Science (NAS) and Engineering, along with the Institute of Medicine, are reported to be planning a major restructuring of the National Research Council (NRC). In the works are plans to streamline NRC operations, raise additional revenue from state governments and other non-federal sources, and extend its influence beyond matters of national defense and into such areas as improving minority health care. Created in 1916, the NRC has a full-time staff of about 1,000 persons who produce about 200 reports a year. In recent years, NRC revenues -- $182 million in 1998 -- have remained stagnant, and there have been complaints about the high cost and long wait associated with many NRC studies. In addition, its cumbersome structure -- the council has seven commissions that oversee a plethora of boards, task forces, and working groups -- is seen as being ill-suited to address interdisciplinary problems. "The layers of approval for individual NRC reports need streamlining," NAS president Bruce Alberts, who also chairs the NRC, said at a press conference. The challenge for a 15-member task force chaired by retired Howard Hughes Medical Institute president Purnell Choppin and retired Honeywell vice president Gerald Dinneen, Alberts said, will be to create a system that is "more efficient while providing equal quality." --Lynn Yarris
School Board Backs Off in Tritium ControversyBy Ron Kolb
No moratorium at the Hall of ScienceBacking off from an earlier resolution after hearing nearly two hours of testimony, the Alameda County Board of Education on April 25 decided not to urge a moratorium on school visits to the Lawrence Hall of Science due to what the Board had considered potential hazards of tritium nearby.Responding to the appeals of officials from Berkeley Lab, the Lawrence Hall of Science and University of California, the Board voted 5 to 1 to modify its stand, and -- acknowledging its lack of scientific expertise -- advised members of the community to "independently assess the possibility of risk and make individual decisions" about visits to the Hall of Science. The Board's original April 7 resolution vowed to send letters to parents of all children in county public schools warning them of the alleged risks associated with the Laboratory's National Tritium Labeling Facility when visiting the Hall, an action that drew broad criticism from educators, scientists and the news media. In a Hayward all-purpose room before an audience of about 50 on April 25, the Board heard several officials from the Lab, the Hall of Science, and the Environmental Protection Agency, none of whom had been invited to the April 7 meeting. Representatives from all three entities reiterated their view that employees and visitors at the Hall of Science have nothing to fear from the minute amounts of tritium that are occasionally emitted from the NTLF. EPA representative Shelley Rosenblum, who said he was speaking "as a government official, teacher, soccer coach and father," told the Board it is absolutely safe to visit the Hall and picnic on its grounds. "I have chaperoned my daughter on field trips there," he said. "What I do (as an EPA official) affects my community and my family. Emissions from the NTLF are far below all clean air thresholds. People should have nothing to fear." Representatives of the Hall of Science made similar pleas for reason, arguing that ill-advised cautionary resolutions can lead to considerable damage to the Hall's reputation as a leader in science education. "We promote science literacy," said Barbara Ando of the Hall of Science, "and we hope this information will help you. We would never jeopardize the health and safety of children." Berkeley Lab's David McGraw, the director of the Environmental Health and Safety Division who represented the Lab at the meeting, said he was pleased that the Board modified the earlier resolution but was disappointed that an effort to completely rescind the original action had failed. "All scientific evidence supports the conclusion that there is no danger to visitors or to workers at the Lawrence Hall of Science from tritium emissions at the Laboratory," he said. "We will continue to work with city and community representatives, in addition to state and federal regulators, to ensure that we remain within all applicable health and safety guidelines and to reassure the public that it should have no lingering concerns about personal health risks at the Hall of Science or elsewhere." Several spokesmen for the Committee to Minimize Toxic Waste, an environmental group in Berkeley, spoke out against the Laboratory and its methodology used in assessing risk. As a result, the Board in its resolution acknowledged "differences of opinion regarding the possibility of hazards" associated with visits to the Hall of Science. Alameda County Superintendent of Schools Sheila Jordan, however, differed with her Board. She had urged that the original resolution be rescinded. In a statement released following the action she said, "The real risk is that teachers, students and families will unnecessarily miss out on the great educational experience the Lawrence Hall of Science provides. I believe that information [from the EPA and the Laboratory] is accurate. "In fact," she added, "my son will be attending a two-week educational camp at the Lawrence Hall of Science this summer."
Groundbreaking Festivities for Straw Bale Building
Me & Isaac Newton, 2 pm, Main auditoriumA feature-length documentary by award-winning filmmaker Michael Apted, "Me & Isaac Newton" explores the roots of scientific creativity and inspiration by focusing on the contributions of seven scientists. Among them is Berkeley Lab's Ashok Gadgil, inventor of the award-winning UV Waterworks, an energy-efficient device that provides safe drinking water in developing nations. Following the film Gadgil will be available to answer questions. "Me & Isaac Newton" has received critical acclaim at the Toronto International Film Festival, the Australian International Documentary Conference, and the International Documentary Film Festival in Amsterdam. Earlier this year it received the Earthwatch Award from the National Geographic Society. Director Apted's credits include both documentaries and feature films such as "Coal Miner's Daughter," "Gorillas in the Mist," and the latest James Bond movie, "The World Is Not Enough." This will be the documentary's first public Bay Area showing. More information can be found on the web at http://www.clearblueskyfilms.com.
Lab Scientists Elected to National Academy of SciencesBy Lynn Yarris
Dave Nygren of the Physics Division, who holds the rare Berkeley Laboratory classification of "Distinguished Scientist," and Jean M.J. Fréchet, a chemist with the Materials Sciences Division, are two of the 60 new members elected to the National Academy of Sciences. Election to NAS is considered one of the highest honors that can be accorded a U.S. scientist or engineer. Nygren, Fréchet, and the other newly elected members bring the total active NAS membership to 1,843. Said Berkeley Lab Director Charles Shank, "This distinguished recognition for both scientists is well deserved, as they are internationally known for their accomplishments. I am delighted for them." Nygren is renowned for his development of particle detector systems, especially his invention of the Time Projection Chamber (TPC), a particle detector that remains a mainstay of experiments in high energy physics. After earning his Ph.D. in physics from the University of Washington in 1967 and serving as a research associate and assistant professor at Columbia University, he came to the Laboratory in 1973. In 1985, he won the prestigious E.O. Lawrence Award from the U.S. Department of Energy for his work on the TPC and other experimental techniques in particle physics. Ten years later he was promoted to the rank of "Distinguished Scientist" by Berkeley Lab Director Charles Shank. In recent years, Nygren has done pioneering research on pixel detectors for both particle and nuclear physics, has been developing x-ray imaging devices based on silicon detectors and high-speed data acquisition systems, and has headed Physics Division's KM3 group, which is working on the development of a kilometer-scale high-energy neutrino telescope. Fréchet, also elected to the National Academy of Engineering, is a leading authority on the design and synthesis of large organic and polymer molecules with controlled shape, function and reactivity. He has also been one of the pioneers in combinatorial chemistry, a technique for discovering new materials. Fréchet received his Ph.D from Syracuse University in 1971 and came to Berkeley Lab in 1997, after having held the Peter J. Debye Chair of Chemistry at Cornell University. He currently holds a joint appointment as a professor of chemistry at UC Berkeley. The National Academy of Sciences is a private organization of scientists and engineers dedicated to the furtherance of science and its use for the general welfare. Established in 1863 by a Congressional act of incorporation which was signed by Abraham Lincoln, the Acadmey of Sciences acts as an official adviser to the federal government, upon request, in any matter of science or technology.
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Shank Explores New Technologies in Congressional TestimonyBy Monica Friedlander
On April 24, Director Charles V. Shank addressed members of Congress to offer his suggestions in the area of emerging technologies and their benefit to government operations. In his testimony before the House Committee on Government Reform's Subcommittee on Government Management, Information, and Technology, Shank focused on the areas of energy, information technology, health, and the environment, and highlighted Berkeley Lab's contributions to these cutting edge fields. "Our research and development, strongly rooted in the physical and natural sciences, now offers the prospect of transforming government operations in many ways," he said. "These changes will be made through unprecedented electronic connectivity and processor power, by improved efficiency of all government facilities, and by delivering on the government's mission to protect the health and welfare of U.S. citizens and the environment." Members of the subcommittee were impressed with what they heard. Rep. Steve Horn (R-Long Beach), chair or the subcommittee, praised the Laboratory, adding that Shank had provided a "marvelous bit of leadership" and that Berkeley Lab had shown "terrific achievements" in the area of energy- efficiency, one of the topics Shank emphasized during his testimony. "Many of our technologies for improving energy efficiency are delivering major cost savings to both the public and the private sectors of the economy. For example, in the area of building technologies we have developed computer-based energy analysis tools, advanced fluorescent lamps, novel windows, and new appliance standards that are saving the nation more than two billion dollars annually in energy costs," Shanks said. In the area of computing, Shank discussed the Lab's historic role in developing and improving network technologies, and focused on the National Energy Research Scientific Computing Center (NERSC) and the Energy Sciences Network (ESnet), which serve thousands of government, industry and university scientists. "Berkeley Lab's research in networking technology provided the advancements that have made the Internet a powerful and useful tool ... Later, we developed the computing protocols that reduced congestion on the Internet and made it more reliable. More recently, Berkeley Lab helped develop the Multicast Backbone protocols that enable videoconferencing among many locations without degrading network performance." Shank also emphasized the Laboratory's work in imaging and visual information, preserving the integrity of the Internet, and expanding computational power. "Our vision... is to move rapidly toward the next generation of processor technology," he said. "In partnership with Sandia and the Lawrence Livermore National Laboratories we are conducting the Extreme Ultra Violet Lithography research program. This program will develop lithography systems to produce computer chips that feature sizes less than 70 nanometers "As the powerful processors are commercialized and enter government information systems," Shank quipped, "we may even see a smaller and faster government." Finally, Shank drew the members' attention to the Laboratory's role in the worldwide effort to decipher the human genome. "This year, one of the most revolutionary achievements in the history of biology is taking place," Shank said. "We have nearly deciphered the human genome, often termed the `book of life' ...The availability of complete genome sequences is driving a major breakthrough in fundamental biology as scientists compare entire genomes to gain new insights into biochemical, physiological and disease pathways. Last month at DOE's Joint Genome Institute, we completed the draft sequence of three chromosomes that contain an estimated 10-15,000 genes, including those whose defects may lead to genetically linked diseases such as kidney disease, prostate and colorectal cancer, leukemia, hypertension, diabetes, and atherosclerosis." Shank concluded by expressing his hope and confidence that development of these technologies will make lasting contributions to the government, the country and society in general. "There is no doubt that quality scientific investments have been paying off for the nation," he said. "The continued benefits will be a more informed government, delivering more effectively managed public resources for the nation."
Study Team Takes a Close Look at Electricity ReliabilityBy Allan Chen
Six major power outages and two serious electrical system disturbances that occured throughout the United States during the summer of 1999 led Secretary of Energy Bill Richardson to appoint a group of experts to study what happened and how it could be prevented in the future. Berkeley Lab scientist Joe Eto was among those appointed to the panel. In March, the Power Outage Study Team (POST) sent their final report and recommendations to the Secretary. This is the first report to address the issue of electrical system reliability in a changing electrical power industry -- a restructuring that has brought a choice of electrical suppliers to consumers in 24 states, but also necessitates a means to assure continued reliability. "There is a wide expectation that competitive markets will bring new efficiencies and innovation to the marketplace, which will save customers money and lead to new services," says Eto. "But the mechanisms that protected electric reliability in the past need to be changed with the market's development." Eto, a scientist in the Environmental Energy Technologies Division, coordinates multi-institutional research projects on the reliability of power systems in restructured markets through the Consortium for Electric Reliability Technology Solutions (CERTS). This Berkeley Lab-led consortium has brought together experts from national laboratories, universities and the electric utility industry. A number of CERTS advisors served on POST with Eto and authored the team's final report. The team examined technical data from outages and other incidents, and held three technical workshops around the country to gather public comments. The Secretary gave the POST report a positive reception. "While the demand for electricity is soaring along with the use of computers, fax machines and other appliances in our homes, offices and factories, the reliability of our electric grid is at times, faltering, mainly because policy makers haven't kept pace with rapid changes in the electric utility industry ... Today's report can be a blueprint for how we will work together to keep the lights on and air conditioners running in America's cities this summer," the Secretary said in a speech before the National League of Cities. The POST study makes 12 recommendations about how the federal government can work with the electric utility industry to reduce power outages. They include: that the federal government should promote market-based approaches to ensure reliable electric services; remove barriers to distributed energy resources (small-scale generation sources such as fuel cells, solar panels, small hydro sources, and diesel-powered generators); support reliability standards for bulk power systems; and encourage energy efficiency as a means of enhancing reliability. Richardson backed Congressional action to address reliability issues. "Federal electricity legislation is an essential component of the effort to help alleviate power outages this summer," Secretary Richardson said. "Congress must move ahead to make changes in the federal statutory framework to provide the certainty that is needed to achieve reliable electric service in competitive wholesale and retail markets." The final report is available on the web at http://www.policy.energy.gov/electricity/postfinal.pdf.
Secretary Richardson Visits Genome Facility As JGI Marks Latest Sequencing Landmark
Bulletin BoardDaughters and Sons to Work Day 2000
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