超长波荡器系统相位匹配的理论研究.pdf
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U?n?n(HEP&NP)131?(?,?kuy,?N!?:.?PKU-SCAF-FELI?(?T?8?mME?.?l?2?VUVX?,l?83d+?mJ?d?.a?IDESY?J.Pflueger?gk?.?z(References)1DING Yuan-Tao et al.Nucl.Instrum.Methods,2004,A528:4164202DING Yuan-Tao et al.HEP&NP,2004,28(4):441(inChinese)(?7?.pU?n?n,2004,28(4):441)3TESLA Technical Design Report.March 2001.http:/tesla.desy.de4Linac Coherent Light Source(LCLS)Conceptual DesignReport,April 2002.http:/www-ssrl.slac.Stanford.edu/lcls/5The BESSY Soft X-ray FEL Technical Design Report,March 2004.http:/www.bessy.de6Pflueger J et al.A Prototype Phase Shifter for the Un-dulator Systems at the TESLA X-ray FEL,TESLA-FEL2000-08.http:/flash.desy.de7Freund H P.Physical Review,2004,E70:0155018ElleaumePetal.DesignConsiderationsfora1AngstromSASEUndulator,TESLA-FEL2000-16.http:/flash.desy.de9Walker R P.Nucl.Instrum.Methods,1993,A335:32833710Tischer M,Pflueger J.Magnet Design of a Prototype Struc-ture for the X-ray FELs at TESLA,TESLA-FEL 2000-12.http:/flash.desy.de11Elleaume P,Chubar O,Chavanne J.Computing 3D Mag-netic Fields from Insertion Devices.Proc.IEEE PAC-97,9P027,3509351112Pflueger J et al.Nucl.Instrum.Methods,2000,A445(/):8788Theoretical Study of Segmented Undulator Phase Matching*LU Hui-Hua1)CHEN Sen-Yu(Institute of High Energy Physics,CAS,Beijing 100049,China)AbstractPhase matching between different undulator segments is a key condition for high gain Free Electron Laserfacilities to gain saturation laser output.This paper develops theoretical study on phase matching,provides the schemeto realize it and gives the parameters of terminations structure.According to the simulation result,100phaseadjustment range can be achieved when the pole height can be adjusted in the range of 0.5mm.Key wordsX-ray free electron laser,undulator,phase matching,design of terminationsReceived 3 August 2006*Supported by Major State Basic Research Development Program(2002CB713600)1)E-mail:
