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Title: LCLS undulator-recent developments : undulator tapering to compensate for particle energy loss (simulations, continuous case). First article measurements and tuning.

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
928631
Report Number(s):
ANL/ASD/CP-118927
TRN: US0803240
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Journal Name: Nucl. Instrum. Methods Phys. Res. A; Journal Volume: 575; Journal Issue: 1-2 ; May 21, 2007; Conference: 16th International Synchrotron Radiation Conference (SR 2006); Jul 10-15, 2006; Novosibirsk, Russia
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; SYNCHROTRON RADIATION; TUNING; WIGGLER MAGNETS

Citation Formats

Vasserman, I. B., Dejus, R. J., Sasaki, S., Xu, J. Z., Trakhtenberg, E. M., Milton, S. V., Moog, E. R., White, M. M., Vinokurov, N. A., and Budker Inst. of Nuclear Physics. LCLS undulator-recent developments : undulator tapering to compensate for particle energy loss (simulations, continuous case). First article measurements and tuning.. United States: N. p., 2007. Web. doi:10.1016/j.nima.2007.01.011.
Vasserman, I. B., Dejus, R. J., Sasaki, S., Xu, J. Z., Trakhtenberg, E. M., Milton, S. V., Moog, E. R., White, M. M., Vinokurov, N. A., & Budker Inst. of Nuclear Physics. LCLS undulator-recent developments : undulator tapering to compensate for particle energy loss (simulations, continuous case). First article measurements and tuning.. United States. doi:10.1016/j.nima.2007.01.011.
Vasserman, I. B., Dejus, R. J., Sasaki, S., Xu, J. Z., Trakhtenberg, E. M., Milton, S. V., Moog, E. R., White, M. M., Vinokurov, N. A., and Budker Inst. of Nuclear Physics. Mon . "LCLS undulator-recent developments : undulator tapering to compensate for particle energy loss (simulations, continuous case). First article measurements and tuning.". United States. doi:10.1016/j.nima.2007.01.011.
@article{osti_928631,
title = {LCLS undulator-recent developments : undulator tapering to compensate for particle energy loss (simulations, continuous case). First article measurements and tuning.},
author = {Vasserman, I. B. and Dejus, R. J. and Sasaki, S. and Xu, J. Z. and Trakhtenberg, E. M. and Milton, S. V. and Moog, E. R. and White, M. M. and Vinokurov, N. A. and Budker Inst. of Nuclear Physics},
abstractNote = {No abstract prepared.},
doi = {10.1016/j.nima.2007.01.011},
journal = {Nucl. Instrum. Methods Phys. Res. A},
number = 1-2 ; May 21, 2007,
volume = 575,
place = {United States},
year = {Mon May 21 00:00:00 EDT 2007},
month = {Mon May 21 00:00:00 EDT 2007}
}

Conference:
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  • No abstract prepared.
  • No abstract prepared.
  • The LCLS project at SLAC requires 40 undulators: 33 in the beam line, 6 spares, and one reference undulator. A new facility was constructed at SLAC for tuning and fiducializing the undulators. The throughput of the facility must be approximately one undulator per week. The undulator tuning has been partially automated. Fiducialization techniques have been devised. The new facility, the tuning techniques, and the fiducialization techniques will be discussed.
  • The LCLS Undulator Beam Loss Monitor System is required to detect any loss radiation seen by the FEL undulators. The undulator segments consist of permanent magnets which are very sensitive to radiation damage. The operational goal is to keep demagnetization below 0.01% over the life of the LCLS. The BLM system is designed to help achieve this goal by detecting any loss radiation and indicating a fault condition if the radiation level exceeds a certain threshold. Upon reception of this fault signal, the LCLS Machine Protection System takes appropriate action by either halting or rate limiting the beam. The BLMmore » detector consists of a PMT coupled to a Cherenkov radiator located near the upstream end of each undulator segment. There are 33 BLMs in the system, one per segment. The detectors are read out by a dedicated system that is integrated directly into the LCLS MPS. The BLM readout system provides monitoring of radiation levels, computation of integrated doses, detection of radiation excursions beyond set thresholds, fault reporting and control of BLM system functions. This paper describes the design, construction and operational performance of the BLM readout system.« less