Title :
A multi-cell RF photoinjector design
Author_Institution :
Dept. of Phys., California Univ., Los Angeles, CA, USA
Abstract :
A research and development effort has been underway to realize a high-brightness, low-emittance RF photoinjector to produce 1 to 3 nC bunch of photoelectrons at an energy of up to 20 MeV with a normalized RMS emittance of 10 π mm-mrad or less. It consists of a half cell at the photocathode and seven full cells, operating in 2856 MHz, K-mode, standing wave. Numerical calculations with POISSON/SUPERFISH and PARMELA codes indicate that the design goal can be achieved within realistic constraints on mechanical device tolerances and rf source availability. The latest among the series of numerical models is somewhat similar to the SLAC type accelerator in geometric dimensions, although the device characteristics are vastly different
Keywords :
accelerator RF systems; electron sources; particle beam injection; photocathodes; 20 MeV; 2856 MHz; K-mode; PARMELA; POISSON/SUPERFISH; low-emittance; multi-cell RF photoinjector; normalized RMS emittance; Boundary conditions; Cathodes; Colliding beam accelerators; Iris; Linear particle accelerator; Numerical models; Physics; Radio frequency; Resonance; Resonant frequency;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505091
