| Paper | Title | Page |
|---|
| TUP66 | Low Emittance Polarized Electron Source Based on Superconducting RF Gun | 293 |
| | - R. Xiang, D. Janssen, P. Michel, K. Moeller, F. Staufenbiel, J. Teichert
FZD
| |
| | Continuous effort has been paid in last decades for a
better polarized electron source for the high energy
physics experiments. The DC guns with GaAs type
photocathodes have been successfully operated in several
laboratories, but the beam emittance is regretfully very
poor. Although rf gun has been considered for the
generation of the polarized electron beams with low
emittance, the limit on vacuum is still an open question
for the currently designed RF guns. In this paper a new
proposal is reported: polarized SRF gun, i.e.
superconducting rf gun with polarized photocathode. The
polarized SRF gun would eliminate this vacuum barrier
because of its low working temperature. Some questions
including the cathode response time and the electron back
bombardment are discussed in some detail, and the beam
dynamics simulation gives positive forecast of the future
application of polarized SRF gun. | |