Archive of Lori Ann White

Lori Ann has written 20 article(s) for InMenlo.


KIPAC Visualization Lab at SLAC After a decade spent studying some of the most puzzling questions in astrophysics, providing research and learning opportunities to more than 100 graduate students and postdoctoral researchers, publishing thousands of scientific papers and pushing back the boundaries of what's known about the cosmos, the Kavli Institute for Particle Astrophysics and Cosmology in Menlo Park decided to celebrate by inviting the community to a birthday party. On March 24, KIPAC opened the doors of the Kavli Building, its home at SLAC, to the public — and more than 350 people took them up on the invitation, making the event a sell out. Kids of all ages crowded around solar telescopes, made their own pulsars, learned how to classify galaxies, found out the difference between astrophysics and astro-fiction, explored the subtleties of the cosmic microwave background and watched faint, ghost-like traces of cosmic rays appear in a bubble chamber and then fade away. All of these opportunities and more were staffed by a full contingent of KIPAC scientists, from the newest graduate student to KIPAC's director, Roger Blandford, all of whom wore name tags inscribed with a cheerful "Ask me!" Blandford called the open house, which was KIPAC's first, "a bit of an experiment," but definitely a successful one. Many of the scientists seemed as eager to explain their work as their audiences were to listen. "I'm excited," said five-year KIPAC researcher Ralf Kaehler. "So many people have signed up." Kaehler works with other scientists to create beautiful 3-D movies of cosmic events, some of which were shown at the open house. The movies proved a big draw; six KIPAC scientists were needed to staff the Visualization Lab (pictured above), which was one of the first exhibits to open and one of the last to close. "It was nice to hear such a buzz at the lunch beforehand," agreed Becky Canning, a postdoctoral researcher who staffed the Galaxy Zoo exhibit. "Everyone seemed thrilled to be here." According to Blandford, KIPAC itself was something of an experiment: "It was a bold adventure writ large by Stanford, and thanks to the efforts of everyone, including SLAC, Stanford, the Kavli Foundation, the Department of Energy, faculty, postdocs and graduate students, we've managed to succeed." SLAC Director Emeritus Jonathan Dorfan, who led the effort to bring KIPAC to Stanford and SLAC, said, “Whereas 10 years ago Stanford had a small program in particle astrophysics and cosmology, it now boasts one of the best and most vibrant programs worldwide." KIPAC open house girl Blandford, who will be stepping down and returning to research June 30 after serving as director twice as long as he originally intended, says he's doing so at a good time. The list of KIPAC contributions to cosmology and astrophysics is long, and includes leading roles in the Fermi Gamma-ray Space Telescope – whose five-year mission was extended by NASA – and the upcoming Large Synoptic Survey Telescope, with founding KIPAC member Steven Kahn recently named director of the project. "We're in a stable position now, with many opportunities ahead. And I genuinely believe that places like KIPAC periodically need fresh ideas and new directions," Blandford said. What remain strong at KIPAC are the connections forged among the members and the excitement they all share about their work. "It's a great community," said graduate student Michael Shaw. "Everyone here has a story; everyone here has a curiosity about the universe they want to satisfy." Variations on that theme rang out again and again. From a simple, "It's the people," repeated by several members, to "It's my home," spoken by both graduate student Alice Allafort and Tom Abel, the third faculty member to be hired after Blandford and Kahn, every researcher mentioned the sense of community they all shared. "The vitality. The energy," said Greg Madejski, who is KIPAC's assistant director of scientific programs. "Even before KIPAC started, there was a sense that this was something new," he said. "SLAC was involved in EGRET, the gamma-ray telescope that preceded Fermi. That gave us an idea we could create something better."Kavl Ten years later, five years after Fermi launched, KIPAC is still determined to create something better and discover something new. Photos by Matt Beardsley Article originally appeared in SLAC Today; used with permission

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John Seeman discovers his love for physics in grade school and makes a career at SLAC in Menlo Park

Thumbnail image for John Seeman discovers his love for physics in grade school and makes a career at SLAC in Menlo Park

John Seeman likes to keep a low profile. But during his 30 years at SLAC in Menlo Park, he’s played important roles in several very high-profile projects: from the Stanford Linear Collider to PEP II to FACET, the Facility for Advanced Accelerator Experimental Tests. His work on PEP II earned him the 2004 Robert R. […]

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SLAC Director Emeritus Sid Drell receives National Medal of Science

Thumbnail image for SLAC Director Emeritus Sid Drell receives National Medal of Science

SLAC Deputy Director Emeritus and Stanford University Hoover Senior Fellow Sidney Drell was one of 12 distinguished researchers presented with the National Medal of Science by President Barack Obama in a Feb. 1 ceremony at the White House. An emeritus professor of theoretical physics at SLAC and member of the Hoover Institution’s Shultz-Stephenson Task Force […]

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Actor Alan Alda visits SLAC in Menlo Park to discuss communicating science to the public

Thumbnail image for Actor Alan Alda visits SLAC in Menlo Park to discuss communicating science to the public

Actor and writer Alan Alda is in a long-term, committed relationship with science, and he wants everyone to join him. Recently, the award-winning actor and writer captivated a Panofsky Auditorium crowd at SLAC in Menlo Park with tales from his love affair with science and tips for scientists on how to capture the affections of […]

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Spotted: Two stone gargoyles on a Menlo Park roof top

Thumbnail image for Spotted: Two stone gargoyles on a Menlo Park roof top

For the past 15 years, two small, grotesque statues have spent their days squatting on the roof of Building 280B on the SLAC campus in Menlo Park, peering out over the cars in Parking Lot G. No one is quite sure how the two stone gargoyles reached their perches — or if they are, they’re not […]

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Chris Spells helps keep SLAC employees on fitness path

Thumbnail image for Chris Spells helps keep SLAC employees on fitness path

The new Arrillaga Recreation Center at SLAC in Menlo Park in managed by Chris Spells. We caught up with him behind the reception desk, where he spends much of his day checking in people at the fitness center, tracking equipment orders and gathering suggestions for improvements. Welcome to SLAC. We’re going to let you introduce […]

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“The more control you have, the finer the details you can see,” said Jerry Hastings, a SLAC scientist and co-author on the research, published this week in Nature Photonics, Buy Alesse (Ovral L) Without Prescription. Discount Alesse (Ovral L), “People have been talking about self-seeding for nearly 15 years. The method we incorporated at SLAC was proposed in 2010 by Gianluca Geloni, Alesse (Ovral L) coupon, Alesse (Ovral L) images, Vitali Kocharyan and Evgeni Saldin of the European XFEL and DESY research centers in Germany. When our team from SLAC and Argonne National Laboratory built it, Alesse (Ovral L) overnight, Alesse (Ovral L) photos, we were surprised by how simple, robust and cost-effective the engineering turned out to be.” Hastings added that laboratories around the world are already planning to incorporate this important advance into their own X-ray laser facilities, my Alesse (Ovral L) experience. Australia, uk, us, usa, Self-seeding has the potential to produce X-ray pulses with significantly higher intensity than the current LCLS performance. Buy Alesse (Ovral L) Without Prescription, The increased intensity in each pulse could be used to probe deep into complex materials to help answer questions about exotic substances like high-temperature superconductors or intricate electronic states like those found in topological insulators.

The LCLS generates its laser beam by accelerating bunches of electrons to nearly the speed of light and setting them on a zig-zag path with a series of magnets, where can i buy cheapest Alesse (Ovral L) online. Alesse (Ovral L) from canada, This forces the electrons to emit X-rays, which are gathered into laser pulses that are a billion times brighter than any available before, where to buy Alesse (Ovral L), Buy cheap Alesse (Ovral L) no rx, and fast enough to scan samples in quadrillionths of a second.

Without self-seeding these X-ray laser pulses contain a range of wavelengths (or colors) in an unpredictable pattern, real brand Alesse (Ovral L) online, Online buy Alesse (Ovral L) without a prescription, not all of which experimenters can use. Until now, Alesse (Ovral L) results, Alesse (Ovral L) interactions, creating a narrower wavelength band at LCLS meant subtracting the unwanted wavelengths, resulting in a substantial loss of intensity, about Alesse (Ovral L). No prescription Alesse (Ovral L) online, To create a precise X-ray wavelength band and make the LCLS even more “laser-like,” researchers installed a slice of diamond crystal halfway down the 130-meter bank of magnets where the X-rays are generated (pictured in photo)

Producing the narrower wavelength band is just the beginning, online buying Alesse (Ovral L) hcl. Ordering Alesse (Ovral L) online, “The resulting pulses could pack up to 10 times more intensity when we finish optimizing the system and add more undulators," said Zhirong Huang, is Alesse (Ovral L) safe, Buy Alesse (Ovral L) without a prescription, a SLAC accelerator physicist and co-author, who has been a major contributor to the project, cheap Alesse (Ovral L). Purchase Alesse (Ovral L) online, LCLS has already begun accepting proposals to use self-seeding for future experiments.

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Buy Reglan Without Prescription, It was a little over two years ago that the Large Hadron Collider kicked off its search for the Higgs boson. But the hunt for the Higgs really began decades ago with the realization of a puzzle to be solved, Japan, craiglist, ebay, overseas, paypal, one that involved more than just the Higgs.

An intriguing asymmetry

The quest started with symmetry, the aesthetically pleasing notion that something can be flipped and still look the same, Reglan class. It’s a matter of everyday experience that the forces of nature work the same way if left is swapped with right; scientists found this also held true, Reglan recreational, at the subatomic level, for swapping plus-charge for minus-charge, and even for reversing the flow of time, Reglan images. This principle also seemed to be supported by the behavior of at least three of the four major forces that govern the interactions of matter and energy.

In 1956, Tsung-Dao Lee of Columbia University and Chen-Ning Yang of Brookhaven National Laboratory published a paper questioning whether a particular form of symmetry, known as parity or mirror symmetry, held for the fourth force, the one governing the weak interactions that cause nuclear decay, Buy Reglan Without Prescription. Order Reglan from mexican pharmacy, And they suggested a way to find out.

Experimentalist Chien-Shiung Wu, a colleague of Lee's at Columbia, fast shipping Reglan, took up the challenge. Reglan alternatives, She used the decay of Cobalt-60 to show that the weak interactions did indeed distinguish between particles spinning to the left and to the right.

This knowledge, combined with one more missing piece, purchase Reglan online, would lead theorists to propose a new particle: the Higgs.

Where does mass comes from? Buy Reglan Without Prescription, In 1957, another clue came from a seemingly unrelated field. Is Reglan addictive, John Bardeen, Leon Cooper and Robert Schrieffer proposed a theory that explained superconductivity, which allows certain materials to conduct electricity with no resistance, Reglan reviews. But their BCS theory, Buy Reglan without a prescription, named after the three inventors, also contained something valuable to particle physicists, a concept called spontaneous symmetry breaking, Reglan samples. Superconductors contain pairs of electrons that permeate the metal and actually give mass to photons traveling through the material. About Reglan, Theorists suggested that this phenomenon could be used as a model to explain how elementary particles acquire mass.

In 1964, three sets of theorists published three separate papers in Physical Review Letters, a prestigious physics journal, Buy Reglan Without Prescription. The scientists were Peter Higgs; Robert Brout and Francois Englert; and Carl Hagen, Gerald Guralnik and Tom Kibble, Reglan blogs. Taken together, Reglan maximum dosage, the papers showed that spontaneous symmetry breaking could indeed give particles mass without violating special relativity.

In 1967, Steven Weinberg and Abdus Salam put the pieces together, buy Reglan online no prescription. Working from an earlier proposal by Sheldon Glashow, Buy generic Reglan, they independently developed a theory of the weak interactions, known as GWS theory, that incorporated the mirror asymmetry and gave masses to all particles through a field that permeated all of space, order Reglan from United States pharmacy. This was the Higgs field Buy Reglan Without Prescription, . The theory was complex and not taken seriously for several years. What is Reglan, However, in 1971 Gerard `t Hooft and Martinus Veltman solved the mathematical problems of the theory, and suddenly it became the leading explanation for the weak interactions, online buying Reglan.

Now it was time for the experimentalists to get to work. Cheap Reglan, Their mission: to find a particle, the Higgs boson, that could exist only if this Higgs field does indeed span the universe, buy Reglan from canada, bestowing mass upon particles.

The hunt begins

Concrete descriptions of the Higgs and ideas of where to look for it began to appear in 1976, Buy Reglan Without Prescription. Reglan interactions, For example, SLAC physicist James Bjorken proposed looking for the Higgs in the decay products of the Z boson, which had been theorized but would not be discovered until 1983, get Reglan.

Einstein's best-known equation, Is Reglan safe, E=mc2, has profound implications for particle physics. It basically means that mass equals energy, Reglan dosage, but what it really means for particle physicists is that the greater the mass of a particle, Reglan from mexico, the more energy required to create it and the bigger the machine needed to find it.

By the '80s, only the four heaviest particles remained to be found: the top quark and the W, Reglan gel, ointment, cream, pill, spray, continuous-release, extended-release, Z and Higgs bosons. The Higgs was not the most massive of the four – that honor goes to the top quark Buy Reglan Without Prescription, – but it was the most elusive, and would take the most energetic collisions to ferret out. Reglan trusted pharmacy reviews, Particle colliders would not be up to the job for a long time. But they began sneaking up on their quarry with experiments that began to rule out various possible masses for the Higgs and narrow the realm where it might exist.

In 1987, australia, uk, us, usa, the Cornell Electron Storage Ring made the first direct searches for the Higgs boson, Herbal Reglan, excluding the possibility that it had a very low mass. In 1989, experiments at SLAC and CERN carried out precision measurements of the properties of the Z boson, Reglan australia, uk, us, usa. These experiments bolstered the GWS theory of weak interactions and set more limits on the possible range of masses for the Higgs, Buy Reglan Without Prescription.

Then, Reglan description, in 1995, physicists at Fermilab’s Tevatron found the most massive quark, the top, online Reglan without a prescription, leaving only the Higgs to complete the picture of the Standard Model. Ordering Reglan online, Closing in

During the 2000s, particle physics was dominated by a search for the Higgs using any means available, but without a collider that could reach the necessary energies, Reglan from canadian pharmacy, all glimpses of the Higgs remained just that – glimpses. Where can i cheapest Reglan online, In 2000, physicists at CERN's Large Electron-Positron Collider (LEP) searched unsuccessfully for the Higgs up to a mass of 114 GeV. Then LEP was shut down to make way for the Large Hadron Collider, my Reglan experience, which steers protons into head-on collisions at much higher energies than ever achieved before. Buy Reglan Without Prescription, Throughout the 2000s, scientists at the Tevatron made heroic efforts to overcome their energy disadvantage with more data and better ways to look at it. Buy Reglan without prescription, By the time the LHC officially began its research program in 2010, the Tevatron had succeed in narrowing the search, but not in discovering the Higgs itself, Reglan dose. When the Tevatron shut down in 2011 scientists were left with massive amounts of data, and extensive analysis, announced earlier this week, offered a slightly closer glimpse of a still-distant Higgs.

In 2011, scientists at the two big LHC experiments, ATLAS and CMS, had announced they were also closing in on the Higgs.

Yesterday morning, they had another announcement to make: They have discovered a new boson – one that could, upon more study, prove to be the long-sought signature of the Higgs field.

The discovery of the Higgs would be the start of a new era in physics, Buy Reglan Without Prescription. The puzzle is much bigger than just one particle; dark matter and dark energy and the possibility of supersymmetry will still beckon searchers even after the Standard Model is complete. Since the Higgs field is connected to all the other puzzles, we will not be able to solve them until we know its true nature. Is it the blue of the sea or the blue of the sky. Is it garden or pathway or building or boat. And how does it truly connect to the rest of the puzzle.

The universe awaits.

Author Lori Ann White works at Menlo Park's SLAC National Accelerator Laboratory. This article appeared in SLAC Today: used with permission.

Image by SLAC Infomedia Servicers.

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Annular eclipse, set for Sunday, May 20, is just partial eclipse locally

Thumbnail image for Annular eclipse, set for Sunday, May 20, is just partial eclipse locally

During an annular eclipse of the sun, such as the one occurring May 20 over much of the western United States, the moon passes between the Earth and the sun. But because the moon is near its farthest distance from Earth, it appears a tiny bit smaller in the sky and doesn’t completely cover the […]

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Spotted: 6-foot-tall behemoth weighing 5,100 pounds getting lift off at SLAC, thanks to 7-ton crane!

Thumbnail image for Spotted: 6-foot-tall behemoth weighing 5,100 pounds getting lift off at SLAC, thanks to 7-ton crane!

A damaged klystron took a short flight out from the center of the SPEAR3 booster ring at the Stanford Synchrotron Radiation Lightsource last week, courtesy of a new, 7-ton-capacity crane. A high-voltage connection had failed on the 5045-model klystron, said Dave Ernst, the Mechanical Services group leader with the SPEAR3 Mechanical Systems Group, and it […]

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Spotted: Eye candy as homage to one sweet machine

Thumbnail image for Spotted: Eye candy as homage to one sweet machine

The Linac Coherent Light Source is one sweet machine, and the instrument scientists working at the six experimental hutches are so enthusiastic about it that they’re willing to put their M&Ms where their mouths are – literally. The colorful candy caper began when Bill Schlotter, instrument scientist with the Soft X-Ray hutch, congratulated Aymeric Robert, […]

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