Bulletin of the American Physical Society
2005 APS April Meeting
Saturday–Tuesday, April 16–19, 2005; Tampa, FL
Session T1: DPF/DPB Prize Session |
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Sponsoring Units: DPF DPB Chair: Natalie Roe, LBNL Room: Marriott Tampa Waterside Grand Salon E |
Monday, April 18, 2005 1:30PM - 2:06PM |
T1.00001: Three Snapshots in the History of Asymmetric B-Factories Invited Speaker: I will present three snapshots in time in the development and use of asymmetric B-factories. The first snapshot, in the late eighties, will describe the origin of the idea and the early debates on its feasibility. Next we will jump to today and briefly review the results and the underlying physics picture that has emerged from the work at the two asymmetric B-factories, PEPII and KEKB. Finally, we will jump ten years into the future and speculate on what the evolution of B-factories may bring, with two orders of magnitude more data and consequently much higher precision measurements. [Preview Abstract] |
Monday, April 18, 2005 2:06PM - 2:42PM |
T1.00002: Wilson Prize Talk Invited Speaker: In the late 1950's and the 1960's the MURA (Midwestern Universities Research Association) working group developed fixed field alternating gradient (FFAG) particle accelerators. FFAG accelerators are a natural corollary of the invention of alternating gradient focusing. The fixed guide field accommodates all orbits from the injection to the final energy. For this reason, the transverse motion in the guide field is nearly decoupled from the longitudinal acceleration. This allows a wide variety of acceleration schemes, using betatron or rf accelerating fields, beam stacking, bucket lifts, phase displacement, etc. It also simplifies theoretical and experimental studies of accelerators. Theoretical studies included an extensive analysis of rf acceleration processes, nonlinear orbit dynamics, and collective instabilities. Two FFAG designs, radial sector and spiral sector, were invented. The MURA team built small electron models of each type, and used them to study orbit dynamics, acceleration processes, orbit instabilities, and space charge limits. A practical result of these studies was the invention of the spiral sector cyclotron. Another was beam stacking, which led to the first practical way of achieving colliding beams. A 50 MeV two-way radial sector model was built in which it proved possible to stack a beam of over 10 amperes of electrons. [Preview Abstract] |
Monday, April 18, 2005 2:42PM - 3:18PM |
T1.00003: Sakurai Prize Talk Invited Speaker: |
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