Author: Xie, H.M.
Paper Title Page
TUICLH1027
 Characterization of Multi-alkali Antimonide Cathode at Cryogenic Temperatures and its Performance in SRF Gun  
 
  • H.M. Xie
    PKU, Beijing, People's Republic of China
  • S.A. Belomestnykh, I. Ben-Zvi, D. Kayran, G.T. McIntyre, B. Sheehy, R. Than, E. Wang, D. Weiss, W. Xu
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
An alkali antimonide photocathode was tested in BNL 704 MHz SRF gun. The cathode QE and lifetime were measured inside the gun. We also observed a reduction on the QE upon cooling down to cryogenic temperature. In this paper, we propose an analytical model and present a Monte-Carlo simulation code to explain this QE decrease. Both results compared with experiments. Effect of cooling the cathode to cryogenic temperature and Schottky effect on QE will be discussed. 		 
slides icon Slides TUICLH1027 [1.815 MB]  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEIBLH2056
 Recent Progress in SRF Acceleration Technology at Peking University  
 
  • S.W. Quan, J.E. Chen, P.L. Fan, L.W. Feng, J.K. Hao, S. Huang, L. Lin, K.X. Liu, F. Wang, Zh.W. Wang, X.D. Wen, H.M. Xie, K. Zhao, F. Zhu
    PKU, Beijing, People's Republic of China
  
  A test facility for superconducting RF acceleration and ERL techniques are under development at Peking University. The electron source for the test facility, DC-SRF photoinjector, has been in operation since 2013. Great efforts have been made to drive the photoinjector toward stable operation. A linac cryomodule, which comprises two 9-cell TESLA-type cavities, is to be assembled soon. It is expected to be in position this summer for preliminary RF and beam tests. The beam line for the accelerator straight section is under construction, which consists of a 3-dipole merge section to transport the electron beam to the linac, a 4-dipole chicane after the linac for bunch manipulation, and the required matching optics. In this presentation, we will report our our latest progress, especially on the commissioning of DC-SRF photoinjector and the construction of the linac cryomodule and the accelerator straight section.  
slides icon Slides WEIBLH2056 [8.092 MB]  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)