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Title: Transverse-To-Longitudinal Photocathode Distribution Imaging

Abstract

In this paper, we present a tunable picosecond-scale bunch train generation technique combining a microlens array (MLA) transverse laser shaper and a transverse-to-longitudinal emittance exchange (EEX) beamline. The modulated beamlet array is formed at the photocathode with the MLA setup. The resulting patterned electron beam is accelerated to 50 MeV and transported to the entrance of the EEX setup. A quadrupole channel is used to adjust the transverse spacing of the beamlet array upstream of the EEX, thereby enabling the generation of a bunch train with tunable separation downstream of the EEX beamline. Additionally, the MLA is mounted on a rotation stage which provides ad- ditional flexibility to produce high-frequency beam density modulation downstream of the EEX. Experimental results obtained at the Argonne Wakefield Accelerator (AWA) facil- ity are presented and compared with numerical simulations.

Authors:
 [1];  [2];  [3];  [4];  [1];  [4];  [4]
  1. Fermilab
  2. Tsinghua U., Beijing, Dept. Eng. Phys.
  3. POSTECH
  4. Argonne
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1452804
Report Number(s):
FERMILAB-CONF-18-161-AD-APC
1677253
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 9th International Particle Accelerator Conference, Vancouver, BC Canada, 04/29-05/04/2018
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Halavanau, A., Qiang, G., Ha, G., Wisniewski, E., Piot, P., Power, J. G., and Gai, W. Transverse-To-Longitudinal Photocathode Distribution Imaging. United States: N. p., 2018. Web.
Halavanau, A., Qiang, G., Ha, G., Wisniewski, E., Piot, P., Power, J. G., & Gai, W. Transverse-To-Longitudinal Photocathode Distribution Imaging. United States.
Halavanau, A., Qiang, G., Ha, G., Wisniewski, E., Piot, P., Power, J. G., and Gai, W. Sun . "Transverse-To-Longitudinal Photocathode Distribution Imaging". United States. doi:. https://www.osti.gov/servlets/purl/1452804.
@article{osti_1452804,
title = {Transverse-To-Longitudinal Photocathode Distribution Imaging},
author = {Halavanau, A. and Qiang, G. and Ha, G. and Wisniewski, E. and Piot, P. and Power, J. G. and Gai, W.},
abstractNote = {In this paper, we present a tunable picosecond-scale bunch train generation technique combining a microlens array (MLA) transverse laser shaper and a transverse-to-longitudinal emittance exchange (EEX) beamline. The modulated beamlet array is formed at the photocathode with the MLA setup. The resulting patterned electron beam is accelerated to 50 MeV and transported to the entrance of the EEX setup. A quadrupole channel is used to adjust the transverse spacing of the beamlet array upstream of the EEX, thereby enabling the generation of a bunch train with tunable separation downstream of the EEX beamline. Additionally, the MLA is mounted on a rotation stage which provides ad- ditional flexibility to produce high-frequency beam density modulation downstream of the EEX. Experimental results obtained at the Argonne Wakefield Accelerator (AWA) facil- ity are presented and compared with numerical simulations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2018},
month = {Sun Apr 01 00:00:00 EDT 2018}
}

Conference:
Other availability
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