Speaker：Wang Chunxi（王春喜）博士 (Argonne National Laboratory，USA)

Host: Prof. QIN Qing

Time: 14:30, January 17, 2012

Place: Room C 305, IHEP Main Building

Abstract:

The Advanced Photon Source (APS), located in the Argonne National Laboratory near Chicago, USA，provides brilliant high-energy or hard x-ray beams. The core of the APS is a high-energy (7 GeV) electron accelerator which feeds a 1.1 km circumference storage ring whose undulators and bending magnets deliver x-rays to almost 60 independently operating beamlines. The Advanced Photon Source Upgrade (APS-U) project at Argonne National Laboratory will enhance the capacity and capabilities of APS. An important aspect of improvement of APS-U is the minimum emittance of storage ring. Here Dr. Wang will introduce APS and its upgrade plan, then focus on the theoretical minimum emittance of storage rings and the trends in ultra-low emittance light source developments.

About the speaker:

Wang Chunxi worked on synchrotron radiation theory and insertion device radiation calculation, Lie algebraic treatment of nonlinear dynamics (e.g. fringe field, 3rd order achromat), MIA (co-invented it with J. Irwin), 6D ionization cooling theory of muon beam, theory and design of high-brightness photoinjectors, ERL, SRF structure, storage-ring theory (especially minimum emittance theory), genetic-algorithm-based multi-objective optimization. He published over 70 papers, 28 in refereed journals (most in Phys. Rev. and NIM and first-authored).

？ 1985, B.S. in theoretical physics from USTC

？ 1988, M.S. from IHEP, advisor Prof. Dingchang Xian

？ 1989--1992, assistant scientist at synchrotron radiation lab

？ 04/92—-08/93, visiting scientist at the Advanced Light Source, Lawrence Berkeley Laboratory

？ 09/93--09/99, Ph.D student, Applied Physics Department of Stanford University, did dissertation on MIA at Accelerator Research Department of SLAC

？ 1999, Ph.D. in accelerator physics from Stanford University

？ 10/99--10/03, Assistant Physicist at Advanced Photon Source, Argonne National Lab

？ 10/03--date, Physicist at APS