Speaker
Mr
Houjun Qian
(DESY)
Description
Photoinjector is an enabling technology for modern accelerator instruments, and photocathode is one of keys to photoinjector performance. Generally, good photocathode features long life time, high quantum efficiency (QE), low thermal emittance, low dark current, and short response time. While cathode lifetime, QE are routinely monitored, cathode thermal emittance is still a time consuming measurement, thus is not routinely measured. In this contribution, a single shot thermal emittance measurement technique is introduced, and both theoretical basics and experiment results are presented.
Primary authors
Mr
Houjun Qian
(DESY)
pengwei huang
(DESY)
Co-authors
Anne Oppelt
(DESY)
Mr
Christian Koschitzki
(DESY Zeuthen)
David Melkumyan
(DV)
Frank Stephan
(DESY)
Mr
Grygorii Vashchenko
(DESY)
Dr
Guan Shu
(DESY)
Mr
Igor Isaev
(DESY)
Dr
Matthias Gross
(DESY)
Mikhail Krasilnikov
(DESY Zeuthen)
Mr
Osip Lishilin
(DESY)
Dr
Xiangkun LI
(DESY Zeuthen)
Ye Chen
(DESY)
