Publications [#167637] of Ying Wu

Papers Published

1. Y. K. Wu, M. Busch, M. Emamian, J. Faircloth, S. Hartman, C. Howell, J. Li, S. Mikhailov, V. Popov, G. Swift, P. Wallace, P. Wang, Performance and Capabilities of Upgraded High Intensity Gamma-ray Source at Duke University, Proceedings of 2009 Particle Accelerator Conference (2009), pp. 3181-3183
   (last updated on 2011/05/18)

   Abstract:
   Since 2008, the up­grad­ed High In­ten­si­ty Gam­ma-ray Source (HIGS) at the Duke FEL Lab has pro­vid­ed users with gamma beams of un­prece­dent­ed qual­i­ty for sci­en­tif­ic re­search. The re­cent­ly com­plet­ed ac­cel­er­a­tor up­grades in­clude a HOM-damped RF cav­i­ty, a full-en­er­gy top-off boost­er in­jec­tor, re­designed stor­age ring straight sec­tions, and two new FELs. The HIGS fa­cil­i­ty is now ca­pa­ble of pro­duc­ing a high in­ten­si­ty gamma beam in a wide en­er­gy range (1 - 100 MeV) using com­mer­cial FEL mir­rors. It has achieved an ex­cep­tion­al­ly high flux, up to ~1010 g/s total (< 20 MeV), mak­ing it the world's most pow­er­ful Comp­ton gamma source. It pro­duces al­most 100% po­lar­ized gam­mas, ei­ther lin­ear or cir­cu­lar. At the HIGS, the gamma en­er­gy can be changed rapid­ly with­in a fac­tor of three in min­utes. Op­er­at­ed by Tri­an­gle Uni­ver­si­ties Nu­cle­ar Lab­o­ra­to­ry since sum­mer 2008, the HIGS is a ded­i­cat­ed Comp­ton gamma source, ca­pa­ble of pro­duc­ing more than 2,000 h of gamma beam time per year with a five-day, two-shift sched­ule. Fu­ture de­vel­op­ment at the HIGS in­cludes high­er en­er­gy gamma beams to­ward the pion thresh­old and a rapid switch of cir­cu­lar po­lar­iza­tion.