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Title: Performance Test of the Next Generation X-Ray Beam Position Monitor System for The APS Upgrade

Abstract

The Advanced Photon Source is developing its next major upgrade (APS-U) based on the multi-bend achromat lattice. Improved beam stability is critical for the upgrade and will require keeping short-time beam angle change below 0.25 µrad and long-term angle drift below 0.6 µrad. A reliable white x-ray beam diagnostic system in the front end will be a key part of the planned beam stabilization system. This system includes an x-ray beam position monitor (XBPM) based on x-ray fluorescence (XRF) from two specially designed GlidCop A-15 absorbers, a second XBPM using XRF photons from the Exit Mask, and two white beam intensity monitors using XRF from the photon shutter and Compton-scattered photons from the front end beryllium window or a retractable diamond film in windowless front ends. We present orbit stability data for the first XBPM used in the feedback control during user operations, as well as test data from the second XBPM and the intensity monitors. They demonstrate that the XBPM system meets APS-U beam stability requirements.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1393933
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 2016 International Beam Instrumentation Conference, 09/11/16 - 09/15/16, Barcelona, ES
Country of Publication:
United States
Language:
English

Citation Formats

Yang, B., Lee, S., Westferro, F., Jaski, Y., Lenkszus, F., Sereno, N., and Ramanathan, M. Performance Test of the Next Generation X-Ray Beam Position Monitor System for The APS Upgrade. United States: N. p., 2017. Web. doi:10.18429.
Yang, B., Lee, S., Westferro, F., Jaski, Y., Lenkszus, F., Sereno, N., & Ramanathan, M. Performance Test of the Next Generation X-Ray Beam Position Monitor System for The APS Upgrade. United States. doi:10.18429.
Yang, B., Lee, S., Westferro, F., Jaski, Y., Lenkszus, F., Sereno, N., and Ramanathan, M. Sat . "Performance Test of the Next Generation X-Ray Beam Position Monitor System for The APS Upgrade". United States. doi:10.18429. https://www.osti.gov/servlets/purl/1393933.
@article{osti_1393933,
title = {Performance Test of the Next Generation X-Ray Beam Position Monitor System for The APS Upgrade},
author = {Yang, B. and Lee, S. and Westferro, F. and Jaski, Y. and Lenkszus, F. and Sereno, N. and Ramanathan, M.},
abstractNote = {The Advanced Photon Source is developing its next major upgrade (APS-U) based on the multi-bend achromat lattice. Improved beam stability is critical for the upgrade and will require keeping short-time beam angle change below 0.25 µrad and long-term angle drift below 0.6 µrad. A reliable white x-ray beam diagnostic system in the front end will be a key part of the planned beam stabilization system. This system includes an x-ray beam position monitor (XBPM) based on x-ray fluorescence (XRF) from two specially designed GlidCop A-15 absorbers, a second XBPM using XRF photons from the Exit Mask, and two white beam intensity monitors using XRF from the photon shutter and Compton-scattered photons from the front end beryllium window or a retractable diamond film in windowless front ends. We present orbit stability data for the first XBPM used in the feedback control during user operations, as well as test data from the second XBPM and the intensity monitors. They demonstrate that the XBPM system meets APS-U beam stability requirements.},
doi = {10.18429},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 25 00:00:00 EDT 2017},
month = {Sat Mar 25 00:00:00 EDT 2017}
}

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