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Title: Far-field OTR and ODR images produced by 7-GeV electron beams at APS.

Abstract

We have investigated the angular distribution patterns (far-field focus) of optical transition radiation (OTR) and optical diffraction radiation (ODR) generated by 7-GeV electron beams passing through and near an Al metal plane, respectively. The 70-murad opening angles of the OTR patterns provide calibration factors for the system. Effects of the upstream quadrupole focusing strength on the patterns as well as polarization effects were observed. The OTR data are compared to an existing OTR single-foil model, while ODR profile results are compared to expressions for single-edge diffraction. ODR was studied with impact parameters of about 1.25 mm, close to the gamma lambda-bar value of 1.4 mm for 628-nm radiation. We expect angle-pointing information along the x axis parallel to the mirror edge is available from the single-lobe ODR data as well as divergence information at the sub-100-murad level. Experimental and model results will be presented.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
971953
Report Number(s):
ANL-HEP-CP-07-43
TRN: US1001430
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference (PAC07); Jun. 25, 2007 - Jun. 29, 2007; Albuquerque, NM
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; ANGULAR DISTRIBUTION; CALIBRATION; DIFFRACTION; ELECTRON BEAMS; FOCUSING; IMPACT PARAMETER; MIRRORS; OPENINGS; POLARIZATION; QUADRUPOLES; RADIATIONS; TRANSITION RADIATION

Citation Formats

Lumpkin, A. H., Berg, W. J., Rule, D. W., Sereno, N. S., and Yao, C.-Y. Far-field OTR and ODR images produced by 7-GeV electron beams at APS.. United States: N. p., 2007. Web. doi:10.1109/PAC.2007.4440011.
Lumpkin, A. H., Berg, W. J., Rule, D. W., Sereno, N. S., & Yao, C.-Y. Far-field OTR and ODR images produced by 7-GeV electron beams at APS.. United States. doi:10.1109/PAC.2007.4440011.
Lumpkin, A. H., Berg, W. J., Rule, D. W., Sereno, N. S., and Yao, C.-Y. Mon . "Far-field OTR and ODR images produced by 7-GeV electron beams at APS.". United States. doi:10.1109/PAC.2007.4440011.
@article{osti_971953,
title = {Far-field OTR and ODR images produced by 7-GeV electron beams at APS.},
author = {Lumpkin, A. H. and Berg, W. J. and Rule, D. W. and Sereno, N. S. and Yao, C.-Y.},
abstractNote = {We have investigated the angular distribution patterns (far-field focus) of optical transition radiation (OTR) and optical diffraction radiation (ODR) generated by 7-GeV electron beams passing through and near an Al metal plane, respectively. The 70-murad opening angles of the OTR patterns provide calibration factors for the system. Effects of the upstream quadrupole focusing strength on the patterns as well as polarization effects were observed. The OTR data are compared to an existing OTR single-foil model, while ODR profile results are compared to expressions for single-edge diffraction. ODR was studied with impact parameters of about 1.25 mm, close to the gamma lambda-bar value of 1.4 mm for 628-nm radiation. We expect angle-pointing information along the x axis parallel to the mirror edge is available from the single-lobe ODR data as well as divergence information at the sub-100-murad level. Experimental and model results will be presented.},
doi = {10.1109/PAC.2007.4440011},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

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