Development of Polarized Photocathodes for the Linear Collider

Richard Prepost

关键词: DESIGN;    ELECTRON SOURCES;    LASERS;    LIFETIME;    LINEAR COLLIDERS;    PERSONNEL;    PHOTOCATHODES;    POLARIZATION;    STANFORD LINEAR ACCELERATOR CENTER;    TARGETS;   

DOI  :  10.2172/969331
RP-ID  :  DOE/FE/41351-1 Final Report
PID  :  OSTI ID: 969331
Others  :  TRN: US1004375

美国|英语

来源: SciTech Connect

【 摘 要 】

In prior years a Wisconsin-SLAC collaboration developed polarized photocathodes which were used for the SLAC SLD and fixed target programs. Currently, the R&D program goal is the development of a polarized electron source (PES) which meets the ILC requirements for polarization, charge, lifetime, and pulse structure. There are two parts to this program. One part is the continued improvement of photocathode structures with higher polarization. The second part is the design and development of the laser system used to drive the photocathode. The long pulse train for the ILC introduces new challenges for the PES. More reliable and stable operation of the PES may be achievable if appropriate R&D is carried out for higher voltage operation and for a simpler photocathode load-lock system. The collaboration with SLAC is through the Polarized Photocathode Research Collaboration (PPRC). Senior SLAC personnel include T. Maruyama, J. Clendenin, R. Kirby, and A. Brachmann.