Tagged: SLAC FACET Toggle Comment Threads | Keyboard Shortcuts

  • richardmitnick 7:35 pm on May 23, 2013 Permalink | Reply
    Tags: , , SLAC FACET,   

    From Symmetry: “FACET boosts plasma acceleration” 

    May 23, 2013
    Lori Ann White

    Upgrades to the Facility for Advanced Accelerator Experimental Tests—including a new 10-terawatt laser—will assist in R&D for new methods of particle acceleration.

    “Just over a year after opening its beam to researchers from around the world, the Facility for Advanced Accelerator Experimental Tests (FACET) at SLAC is shining a little brighter. With the addition of a new 10-terawatt laser and other equipment upgrades, one of the facility’s main goals—the development of a new method of particle acceleration that boosts particles’ energy on waves of plasma—looks especially promising.

    facet

    During the facility’s first run, which took place from April through early July of 2012, researchers sent electrons accelerated in the SLAC linear accelerator into a chamber of hot gas, turning it into a plasma. Some of those very same electrons then rode the resulting plasma wave to even higher energies. This accelerated the electrons with great efficiency—thousands of times more in the same distance than the technology used in today’s particle accelerators.

    But, as happens so often in basic research, FACET’s first run also revealed the need to make some modifications. Using the accelerated electron bunch to create its own plasma had issues—issues that make the laser a vital addition to the 2013 run, says SLAC Advanced Accelerator Research Department leader Mark Hogan, who is both an important part of FACET and, as one of the leaders of the plasma wakefield acceleration team, a hands-on experimenter himself.

    ‘Controlling the characteristics of both the electron bunches and the resulting plasma to where the process is efficient enough has turned out to be tough,’ Hogan says. ‘As it is, not enough of the electrons are being accelerated.’

    The team will now use the new laser to zap the chamber of hot gas, turning it into a plasma before any electrons enter. That laser-created plasma will be more consistent than the electron-created version, which means that when the electron bunches do enter they’ll cause a more controlled plasma wave.

    Selina Li, the SLAC accelerator physicist in charge of the project, says the laser is in good shape and should be operational this summer.”

    See the full article here.

    Symmetry is a joint Fermilab/SLAC publication.


     
  • richardmitnick 9:59 am on July 16, 2012 Permalink | Reply
    Tags: , , , SLAC FACET, ,   

    From SLAC Today: “FACET Promises to Improve Power, Efficiency of Particle Accelerators” 

    July 16, 2012
    Lori Ann White

    The Department of Energy’s newest user facility – a cutting-edge particle accelerator available to scientists from all over the world – is a radical new chapter in the history of the world’s longest, most powerful linear accelerator.

    lcls
    SLAC LCLS

    For more than four decades, the two-mile-long linac at SLAC National Accelerator Laboratory fueled Nobel-winning particle-physics research. Now it’s been repurposed – one might even say reimagined – in ways that keep it at the forefront of discovery, and not just in particle physics.

    The final third of the linac now powers the Linac Coherent Light Source, the world’s first hard X-ray laser. Researchers from around the world use LCLS’s unique ability to take crisp pictures of atomic motion and changes in chemical bonds to drive applications in energy and environmental sciences, bioscience and materials engineering.

    And the remaining two-thirds of the accelerator have been claimed by FACET, the Facility for Advanced Accelerator Experimental Tests, which is revving up the 50-year-old equipment and packing the final section with state-of-the-art instruments. The result is a test bed for technology that promises to improve the power and efficiency of today’s particle accelerators and expand their roles in medicine, materials and biological science, high-energy physics and more.”

    See the full article here.

    SLAC is a multi-program laboratory exploring frontier questions in photon science, astrophysics, particle physics and accelerator research. Located in Menlo Park, California, SLAC is operated by Stanford University for the DOE’s Office of Science.
    i1

     
  • richardmitnick 10:22 am on May 1, 2012 Permalink | Reply
    Tags: , , , SLAC FACET,   

    From SLAC Today: “SLAC’s Newest Facility Kicks Off User Run” 

    May 1, 2012
    Lori Ann White

    “After months of installation and commissioning efforts, SLAC’s newest user facility welcomed its first two groups of experimenters on Friday. They came to use the tightly focused electron bunches delivered by FACET, the Facility for Advanced Accelerator Experimental Tests, for two very different purposes.

    mirror
    SLAC graduate student Spencer Gessner aligns a mirror for FACET’s X-ray spectrometer. The instrument was just one of the many new instruments and pieces of equipment installed in the beam tunnel… (Photo by Brad Plummer)

    According to Spencer Gessner, a graduate student at SLAC and a member of the team, ‘One of the goals of this first run is to replicate and then extend some of the results achieved by E167,’ a plasma wakefield experiment that took place at SLAC’s Final Focus Test Beam before it shut down in 2007 to make room for the Linac Coherent Light Source. E167 raised the energy of a few electrons from 42 billion to 85 billion electronvolts over a distance of just 84 centimeters – a little less than a yard.

    In the second experiment, Ioan Tudosa of the Stanford Institute for Materials and Energy Science, a joint SLAC–Stanford institute, will also continue work previously done at SLAC, this time in magnetic switching. The magnetic switching technique, in which an electric field is used to make north and south poles swap places in a magnet, works more than 1000 times faster than current technology and could revolutionize data storage. Tudosa will expose magnetic samples to FACET’s powerful electron pulses.”

    See the full article here.

    SLAC is a multi-program laboratory exploring frontier questions in photon science, astrophysics, particle physics and accelerator research. Located in Menlo Park, California, SLAC is operated by Stanford University for the DOE’s Office of Science. i1

     
  • richardmitnick 5:18 pm on January 6, 2012 Permalink | Reply
    Tags: , , SLAC FACET, , ,   

    From SLAC Today: Good News For 2012 from the Director 

    pd
    SLAC Lab Director Persis Drell(Photo by Brad Plummer)

    This is the Director’s complete article. But visit SLAC News Center early and often for more news. You can even get SLAC News via email.

    January 6, 2012
    Persis Drell

    “Just before we closed for the holidays Congress passed a budget. That by itself is excellent news. Having a budget removes tremendous uncertainty for both our projects and operations, and we will not have the seesaw of drama that we had last spring with the long continuing resolution and threats of a government shutdown.

    However, it was not surprising, given the overall economic concerns of the country, that the FY12 budget for the DOE Office of Science didn’t increase a great deal over FY11. Overall, the Office of Science saw a 0.9 percent increase, with the Office of Basic Energy Sciences (which funds the Linac Coherent Light Source and Stanford Synchrotron Radiation Lightsource) increasing by 1 percent and High Energy Physics decreasing by 0.5 percent.

    Within that very constrained, essentially flat budget, SLAC did just fine. Our operations budgets for our facilities, LCLS and SSRL, will keep the machines running and support the new users coming on to LCLS as more experimental stations come on line. Perhaps most importantly, LCLS-II is going forward full steam, and we even got funding to get our new user support building, SUSB, which will replace Panofsky auditorium and the cafeteria, off to a good start.

    In Particle Physics and Astrophysics, the Large Synoptic Survey Telescope is continuing to move forward. In the Accelerator Directorate, FACET, the Facility for Advanced aCcelerator Experimental Tests, will operate for users during a planned three-month run this spring.

    The SLAC FY12 budget is a huge vote of confidence in the laboratory. In this tough year, our facilities are operating fully and our projects are going forward. This is a vote of confidence in our ability to deliver projects and a vote of confidence in the science we will be producing. We cannot fail to deliver in any aspect of our performance!

    Most importantly, the CD-2 baseline review for LCLS-II will be coming up this spring or early summer and this is a review we cannot stumble on. In times like these, there are many other worthy projects that are being deferred so that ours can go forward, and we have to deliver! It is a priority for the laboratory this year to have a successful CD-2 review for LCLS-II. I have great confidence that we can and we will!

    SLAC is a multi-program laboratory exploring frontier questions in photon science, astrophysics, particle physics and accelerator research. Located in Menlo Park, California, SLAC is operated by Stanford University for the DOE’s Office of Science.
    i1

     
c
Compose new post
j
Next post/Next comment
k
Previous post/Previous comment
r
Reply
e
Edit
o
Show/Hide comments
t
Go to top
l
Go to login
h
Show/Hide help
shift + esc
Cancel
Follow

Get every new post delivered to your Inbox.

Join 348 other followers

%d bloggers like this: