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Title: Spatial control of photoemitted electron beams using a microlens-array transverse-shaping technique

A transversely inhomogeneous laser distribution on the photocathode surface generally produces electron beams with degraded beam quality. In this paper, we explore the use of microlens arrays to dramatically improve the transverse uniformity of an ultraviolet drive-laser pulse used in a photoinjector. Here, we also demonstrate a capability of microlens arrays to generate transversely modulated electron beams and present an application of such a feature to diagnose the properties of a magnetized beam.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [4] ;  [4]
  1. Northern Illinois Univ., DeKalb, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); Tsinghua Univ., Beijing (China)
  3. POSTECH, Kyoungbuk (Korea)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-17-420-APC; arXiv:1707.08448
Journal ID: ISSN 2469-9888; PRABCJ; 1611710
Grant/Contract Number:
AC02-07CH11359; SC0011831; AC02-06CH11357
Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 20; Journal Issue: 10; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
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)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS
OSTI Identifier:
1405046
Alternate Identifier(s):
OSTI ID: 1402477