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Title: Design of a high resolution optical transition radiation imager for the linac coherent light source undulator.

Abstract

The Linac Coherent Light Source (LCLS), a free-electron x-ray laser, is under design and construction. Its high intensity electron beam, 3400 A in peak current and 46 TW in peak power, is concentrated in a small area (30 micrometer rms in both horizontal and vertical directions) inside its undulator. Ten optical transition radiation (OTR) imagers are planned between the undulator segments for the characterization of the transverse profiles of the electron beam. In this paper, we present the performance requirements and technical requirements of the OTR imagers. We will discuss in detail the design of the OTR screen, the arrangement and modeling of the imaging optics, and the mechanical design and analysis of the compact camera module. Through a unique optical arrangement, this imager will achieve a fine resolution (12 micrometer rms or better) over the entire field of view (5 mm × 5 mm). The compact camera module will fit in the limited space available with remote focus adjustment. A digital camera will be used to read out the beam images in a programmable region (5 mm x 0.5 mm) at the full beam repetition rate (120 Hz), or over the entire field at a lower rate (15 Hz).

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
972573
Report Number(s):
ANL/AOD/CP-116216
TRN: US1001620
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference (PAC05); May 16, 2005 - May 20, 2005; Knoxville, TN
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CAMERAS; CONSTRUCTION; DESIGN; ELECTRON BEAMS; LIGHT SOURCES; LINEAR ACCELERATORS; OPTICS; PEAK LOAD; PERFORMANCE; RESOLUTION; SIMULATION; TRANSITION RADIATION; WIGGLER MAGNETS; X-RAY LASERS

Citation Formats

Yang, B. X., Bailey, J. L., Walters, D. R., and Stein, S. J.. Design of a high resolution optical transition radiation imager for the linac coherent light source undulator.. United States: N. p., 2006. Web.
Yang, B. X., Bailey, J. L., Walters, D. R., & Stein, S. J.. Design of a high resolution optical transition radiation imager for the linac coherent light source undulator.. United States.
Yang, B. X., Bailey, J. L., Walters, D. R., and Stein, S. J.. Sun . "Design of a high resolution optical transition radiation imager for the linac coherent light source undulator.". United States. doi:.
@article{osti_972573,
title = {Design of a high resolution optical transition radiation imager for the linac coherent light source undulator.},
author = {Yang, B. X. and Bailey, J. L. and Walters, D. R. and Stein, S. J.},
abstractNote = {The Linac Coherent Light Source (LCLS), a free-electron x-ray laser, is under design and construction. Its high intensity electron beam, 3400 A in peak current and 46 TW in peak power, is concentrated in a small area (30 micrometer rms in both horizontal and vertical directions) inside its undulator. Ten optical transition radiation (OTR) imagers are planned between the undulator segments for the characterization of the transverse profiles of the electron beam. In this paper, we present the performance requirements and technical requirements of the OTR imagers. We will discuss in detail the design of the OTR screen, the arrangement and modeling of the imaging optics, and the mechanical design and analysis of the compact camera module. Through a unique optical arrangement, this imager will achieve a fine resolution (12 micrometer rms or better) over the entire field of view (5 mm × 5 mm). The compact camera module will fit in the limited space available with remote focus adjustment. A digital camera will be used to read out the beam images in a programmable region (5 mm x 0.5 mm) at the full beam repetition rate (120 Hz), or over the entire field at a lower rate (15 Hz).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
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