Tests of photocathodes for high repetition rate x-ray FELs at the APEX facility at LBNL

Fernando Sannibale; Daniele Filippetto; Houjun Qian; Christos F. Papadopoulos; Russell Wells; Toby Kramasz; Howard Padmore; Jun Feng; James Nasiatka; Ruixuan Huang; Max Zolotorev; John W. Staples

doi:10.1117/12.2181912

12 May 2015 Tests of photocathodes for high repetition rate x-ray FELs at the APEX facility at LBNL

Fernando Sannibale, Daniele Filippetto, Houjun Qian, Christos F. Papadopoulos, Russell Wells, Toby Kramasz, Howard Padmore, Jun Feng, James Nasiatka, Ruixuan Huang, Max Zolotorev, John W. Staples

Author Affiliations +

Proceedings Volume 9512, Advances in X-ray Free-Electron Lasers Instrumentation III; 95121N (2015) https://doi.org/10.1117/12.2181912
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

After the formidable results of X-ray 4th generation light sources based on free electron lasers around the world, a new revolutionary step is undergoing to extend the FEL performance from the present few hundred Hz to MHz-class repetition rates. In such facilities, temporally equi-spaced pulses will allow for a wide range of previously non-accessible experiments. The Advanced Photo-injector EXperiment (APEX) at the Lawrence Berkeley National Laboratory (LBNL), is devoted to test the capability of a novel scheme electron source, the VHF-Gun, to generate the required electron beam brightness at MHz repetition rates. In linac-based FELs, the ultimate performance in terms of brightness is defined at the injector, and in particular, cathodes play a major role in the game. Part of the APEX program consists in testing high quantum efficiency photocathodes capable to operate at the conditions required by such challenging machines. Results and status of these tests at LBNL are presented.

Citation Download Citation

Fernando Sannibale, Daniele Filippetto, Houjun Qian, Christos F. Papadopoulos, Russell Wells, Toby Kramasz, Howard Padmore, Jun Feng, James Nasiatka, Ruixuan Huang, Max Zolotorev, and John W. Staples "Tests of photocathodes for high repetition rate x-ray FELs at the APEX facility at LBNL", Proc. SPIE 9512, Advances in X-ray Free-Electron Lasers Instrumentation III, 95121N (12 May 2015); https://doi.org/10.1117/12.2181912

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available