Title :
A proposed injector for the LCLS linac
Author :
Yeremian, A.D. ; Bharadwaj, V.K. ; Emma, P. ; Miller, R.H. ; Palmer, D.T. ; Woodley, M.D.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
The Linac Coherent Light Source (LCLS) will use the last portion of the SLAC accelerator as a driver for a short wavelength FEL. The injector must produce 1-nC, 3-ps rms electron bunches at a repetition rate of up to 120 Hz with a normalized rms emittance of about 1 mm-mrad. The injector design takes advantage of the photocathode RF gun technology developed since its conception in the mid 1980´s, in particular the S-band RF gun developed by the SLAC/BNL/UCLA collaboration, and emittance compensation techniques developed in the last decade. The injector beamline has been designed using the SUPERFISH, POISSON, PARMELA, and TRANSPORT codes in a consistent way to simulate the beam from the gun up to the entrance of the main accelerator linac where the beam energy is 150 MeV. PARMELA simulations indicate that at 150 MeV, space charge effects are negligible
Keywords :
booster injectors; electron accelerators; linear accelerators; particle beam bunching; particle beam dynamics; 150 MeV; LCLS linac; Linac Coherent Light Source; PARMELA; POISSON; S-band RF gun; SLAC accelerator; SUPERFISH; TRANSPORT code; electron bunches; emittance compensation techniques; injector beamline; normalized rms emittance; photocathode RF gun technology; short wavelength FEL; space charge effects; Cathodes; Klystrons; Laser beams; Laser tuning; Linear accelerators; Linear particle accelerator; Monitoring; Particle beams; Solenoids; Space charge;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.752841
