First Warm Accelerator Structure Fabricated for Cold Machine

Some of the people who contributed to the first warm "L-Band" accelerator structure fabricated in the Klystron Microwave Department.
(Photo courtesy of Brad Plummer.)

by Heather Rock Woods

The Klystron Microwave Department has finished fabricating the first warm "L-Band" accelerator structure to fill a unique niche in the International Linear Collider (ILC) project. L-Band structures use a frequency of 1.3 GHz to accelerate electrons and positrons. For most of the ILC's 31 kilometer length, the structures are cold, functioning at a few degrees above absolute zero. But the ILC needs a warm, or room-temperature, L-Band structure just after the positron source because producing positrons generates huge amounts of heat and "capturing" them requires strong focusing.

The prototype room-temperature structure is currently being installed at the Next Linear Collider Test Accelerator in End Station B, where it will be tested with one millisecond pulses at an accelerating gradient of 15 mega-volts per meter.

"The challenge is trying to run a beam that is optimized for a long-pulse cold machine using warm structures," said Project Manager Chris Adolphsen of the ILC Experiments and Prototypes group. Read more...

On-Site Fire Station to Support ALS Capabilities

by Ken Kingery

Tami Smith, Norm Park, and Captain Chris Jackson at Fire Station 7.

The grounds of SLAC are about to become just a little bit safer. Later this month, the Palo Alto Fire Department (PAFD) will begin providing full paramedic capability at the on-site fire station and Advanced Life Support (ALS) capabilities on SLAC fire engines.

"This program is an extremely good thing for the lab," said SLAC Deputy Fire Marshal Ralph Kerwin. "We're very excited to hear it was happening. It will greatly expand the ability to respond to any medical emergency on site."

Station 7—SLAC's fire station—has been on the list to support ALS for several years. The upgrade was also a suggested course of action in SLAC's 2006 emergency management program internal assessment. At the time, implementation was delayed due to PAFD staffing limitations. Recent changes to shift rotations, newly ordered equipment, and newly hired personnel, however, allow for the support of ALS.

"Providing advanced life support in less than five minutes allows for a higher level of care, which could make the difference in a heart attack, diabetic or stroke situation," said Station 7 Captain Doug Conn. "Basic life support does help stabilize a medical patient, but when an advanced intervention is needed, paramedics on the scene could make the difference between life and death or the patient's resulting quality of life."

The service is especially important because half of all emergency calls from SLAC are medically related and early advanced life support in certain situations has proven to reduce admissions in the hospital.

The current program will remain in a trial phase until the end of the year, when it will be evaluated for future continuation. Both Kerwin and Conn fully expect the program to remain in place providing full paramedic coverage on SLAC fire engines from here on out.

"You almost have to have a paramedic certification to get a firefighting job these days," said Conn. "In fact, we plan on hiring nothing but paramedics for the next few years to help support this program."

Word of the Week:
"Tesla"

by Brad Plummer

Named after scientist and inventor Nikola Tesla, the term tesla (T) is a unit that describes the intensity of a magnetic field. The earth generates a magnetic field at the equator that is 0.000031 T. By comparison, a typical undulator magnet used by SPEAR3 generates a field of 2 T—nearly 65 thousand times stronger than the earth's magnetic field.

Safety Seconds

by John Cornuelle

From time to time at SLAC, I observe unsafe conditions, usually visibility issues, that can be remedied with maybe a minute of effort. Because they are so simple, CEF or Security gets them done quickly. Of course, the trick is going for simplicity.

In the News: Competitiveness Bill Signed

from FYI: The American Bulletin of Science Policy News

On August 9, President Bush signed into law H.R. 2272, the America COMPETES Act, intended to strengthen the nation's commitment to research and education. The bill represents a bipartisan, bicameral effort to expand and enhance U.S. basic research and education in science, technology, engineering and mathematics (STEM) to ensure the nation's continued competitiveness in the future.

The bill is the culmination of a number of years of effort by the science community and members of Congress. Last year President George Bush promoted some of the same concepts with his "American Competitiveness Initiative," announced in the 2006 State of the Union address. The final version of the legislation signed last week incorporates many prior bills, including S. 761, the comprehensive Senate competitiveness bill; the House-passed NSF and NIST reauthorizations; and several bills introduced by House Science and Technology Committee Chairman Bart Gordon (D-TN) to expand NSF programs for STEM education and workforce development. "This is not just an idle thought for those of us who have kids and grandkids," said Gordon of the bill's signing. "I am very concerned that the next generation of Americans can be the first generation of Americans to inherit a national standard of living less than their parents if we don't do something. This bill will help turn that corner."
Read more...

Events (see all | submit)

August 14: (8:00 a.m., 10:30 a.m., 3:00 p.m.) PPA All Hands Meeting
August 14: (12:30 p.m.) Experimental Seminar: Direct Observation of the Cascade-B Baryon

Access (see all)

Announcements
(see all | submit)

Lab Announcements

Community Bulletin Board

News (see all | submit)

<% Response.AddHeader "Last-modified", getArticleDate() 'Response.AddHeader "Last-modified","Mon, 01 Sep 1997 01:03:33 GMT" 'Monday, December 06, 2010 %>

View online at http://today.slac.stanford.edu/

First Warm Accelerator Structure Fabricated for Cold Machine Some of the people who contributed to the first warm "L-Band" accelerator structure fabricated in the Klystron Microwave Department. (Photo courtesy of Brad Plummer.) by Heather Rock Woods The Klystron Microwave Department has finished fabricating the first warm "L-Band" accelerator structure to fill a unique niche in the International Linear Collider (ILC) project. L-Band structures use a frequency of 1.3 GHz to accelerate electrons and positrons. For most of the ILC's 31 kilometer length, the structures are cold, functioning at a few degrees above absolute zero. But the ILC needs a warm, or room-temperature, L-Band structure just after the positron source because producing positrons generates huge amounts of heat and "capturing" them requires strong focusing. The prototype room-temperature structure is currently being installed at the Next Linear Collider Test Accelerator in End Station B, where it will be tested with one millisecond pulses at an accelerating gradient of 15 mega-volts per meter. "The challenge is trying to run a beam that is optimized for a long-pulse cold machine using warm structures," said Project Manager Chris Adolphsen of the ILC Experiments and Prototypes group. Read more...

On-Site Fire Station to Support ALS Capabilities by Ken Kingery Tami Smith, Norm Park, and Captain Chris Jackson at Fire Station 7. The grounds of SLAC are about to become just a little bit safer. Later this month, the Palo Alto Fire Department (PAFD) will begin providing full paramedic capability at the on-site fire station and Advanced Life Support (ALS) capabilities on SLAC fire engines. "This program is an extremely good thing for the lab," said SLAC Deputy Fire Marshal Ralph Kerwin. "We're very excited to hear it was happening. It will greatly expand the ability to respond to any medical emergency on site." Station 7—SLAC's fire station—has been on the list to support ALS for several years. The upgrade was also a suggested course of action in SLAC's 2006 emergency management program internal assessment. At the time, implementation was delayed due to PAFD staffing limitations. Recent changes to shift rotations, newly ordered equipment, and newly hired personnel, however, allow for the support of ALS. "Providing advanced life support in less than five minutes allows for a higher level of care, which could make the difference in a heart attack, diabetic or stroke situation," said Station 7 Captain Doug Conn. "Basic life support does help stabilize a medical patient, but when an advanced intervention is needed, paramedics on the scene could make the difference between life and death or the patient's resulting quality of life." The service is especially important because half of all emergency calls from SLAC are medically related and early advanced life support in certain situations has proven to reduce admissions in the hospital. The current program will remain in a trial phase until the end of the year, when it will be evaluated for future continuation. Both Kerwin and Conn fully expect the program to remain in place providing full paramedic coverage on SLAC fire engines from here on out. "You almost have to have a paramedic certification to get a firefighting job these days," said Conn. "In fact, we plan on hiring nothing but paramedics for the next few years to help support this program."	Word of the Week: "Tesla" by Brad Plummer Named after scientist and inventor Nikola Tesla, the term tesla (T) is a unit that describes the intensity of a magnetic field. The earth generates a magnetic field at the equator that is 0.000031 T. By comparison, a typical undulator magnet used by SPEAR3 generates a field of 2 T—nearly 65 thousand times stronger than the earth's magnetic field. Safety Seconds by John Cornuelle From time to time at SLAC, I observe unsafe conditions, usually visibility issues, that can be remedied with maybe a minute of effort. Because they are so simple, CEF or Security gets them done quickly. Of course, the trick is going for simplicity. In the News: Competitiveness Bill Signed from FYI: The American Bulletin of Science Policy News On August 9, President Bush signed into law H.R. 2272, the America COMPETES Act, intended to strengthen the nation's commitment to research and education. The bill represents a bipartisan, bicameral effort to expand and enhance U.S. basic research and education in science, technology, engineering and mathematics (STEM) to ensure the nation's continued competitiveness in the future. The bill is the culmination of a number of years of effort by the science community and members of Congress. Last year President George Bush promoted some of the same concepts with his "American Competitiveness Initiative," announced in the 2006 State of the Union address. The final version of the legislation signed last week incorporates many prior bills, including S. 761, the comprehensive Senate competitiveness bill; the House-passed NSF and NIST reauthorizations; and several bills introduced by House Science and Technology Committee Chairman Bart Gordon (D-TN) to expand NSF programs for STEM education and workforce development. "This is not just an idle thought for those of us who have kids and grandkids," said Gordon of the bill's signing. "I am very concerned that the next generation of Americans can be the first generation of Americans to inherit a national standard of living less than their parents if we don't do something. This bill will help turn that corner." Read more...	Events (see all \| submit) August 14: (8:00 a.m., 10:30 a.m., 3:00 p.m.) PPA All Hands Meeting August 14: (12:30 p.m.) Experimental Seminar: Direct Observation of the Cascade-B Baryon Access (see all) Building 027 Aerobics room floor repair Parking lot between B120 and B140 closed Sidewalk closed in front of Kavli, Bldg 051, for 3rd floor glass repair - August 15 Alpine Gate & PEP Ring Road closed Gates 17 & 30 open 24-7 Research Yard bisected Announcements (see all \| submit) Lab Announcements Stanford University Learning & Development Opportunities New Publication: ESH Manual, Chapter 30, Air Quality Kids Day - August 20, 2007 Community Bulletin Board 2007 San Francisco Jug Band Festival HIP STAP Classes Attention all AT&T (formerly Cingular) customers News (see all \| submit) New DOE Agency Sparks an Energetic Debate Science Congress Passes Massive Measure to Support Research, Education Science
		Flea Market Linear Café Menu Employee Milestones Search the Archives Subscribe non-SLAC e-mail Send Us Your Feedback

<% Response.AddHeader "Last-modified", getArticleDate() 'Response.AddHeader "Last-modified","Mon, 01 Sep 1997 01:03:33 GMT" 'Monday, December 06, 2010 %> View online at http://today.slac.stanford.edu/


	Tuesday - August 14, 2007