Title :
Design, construction and status of all niobium superconducting photoinjector at BNL
Author :
Srinivasan-Rao, T. ; Ben-Zvi, I. ; Burrill, A. ; Citver, G. ; Hershcovitch, A. ; Pate, D. ; Reuter, A. ; Scaduto, J. ; Zhao, Q. ; Zhao, Y. ; Delayen, J. ; Kneisel, P.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
We present here the design and construction of an all niobium superconducting RF injector to generate high average current, high brightness electron beam. A 1/2 cell superconducting cavity has been designed, built, and tested. A cryostat has been built to cool the cavity to ∼2 K. The RF system can deliver up to 500 W at 1.3 GHz to the cavity. A mode-locked Nd:YVO4 laser, operating at 266 nm with 0.15 W average power, phase locked to the RF, will irradiate a laser cleaned Nb surface at the back wall of the cavity. Description of critical components and their status are presented in the paper. Based on DC measurements, QE of up to 10-4 can be expected from such cavity.
Keywords :
accelerator cavities; accelerator magnets; electron sources; niobium; particle beam injection; photocathodes; superconducting magnets; 1.3 GHz; 2 K; 500 W; Nb; PARMELA simulation; all niobium superconducting RF injector; critical components; electron source; high average current beam; high brightness electron beam; laser cleaned surface; photocathode; superconducting cavity; Brightness; Cathodes; Electron beams; Laser beams; Laser mode locking; Niobium; Power lasers; Radio frequency; Surface emitting lasers; Testing;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1288849
