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Title: FIRST BEAM TESTS OF THE APS MBA UPGRADE ORBIT FEEDBACK CONTROLLER

Abstract

The new orbit feedback system required for the APS multi-bend acromat (MBA) ring must meet challenging beam stability requirements. The AC stability requirement is to correct rms beam motion to 10 % the rms beam size at the insertion device source points from 0.01 to 1000 Hz. The vertical plane represents the biggest challenge for AC stability which is required to be 400 nm rms for a 4 micron vertical beam size. In addition long term drift over a period of 7 days is required to be 1 micron or less at insertion de- vice BPMs and 2 microns for arc bpms. We present test re- sults of theMBA prototype orbit feedback controller (FBC) in the APS storage ring. In this test, four insertion device BPMs were configured to send data to the FBC for process- ing into four fast corrector setpoints. The configuration of four bpms and four fast correctors creates a 4-bump and the configuration of fast correctors is similar to what will be implemented in the MBA ring. We report on performance benefits of increasing the sampling rate by a factor of 15 to 22.6 kHz over the existing APS orbit feedback system, lim- itations due tomore » existing storage ring hardware and extrapo- lation to theMBA orbit feedback design. FBC architecture, signal flow and processing design will also be discussed.« less

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1393938
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

Sereno, N. S., Arnold, N., Brill, A., Bui, H., Carwardine, J., Decker, G., Deriy, B., Emery, L., Farnsworth, R., Fors, T., Keane, R., Lenkszus, F., Lill, R., Paskvan, D., Pietryla, A., Shang, H., Shoaf, S., Veseli, S., Wang, J., Xu, S., and Yang, B.X.. FIRST BEAM TESTS OF THE APS MBA UPGRADE ORBIT FEEDBACK CONTROLLER. United States: N. p., 2017. Web.
Sereno, N. S., Arnold, N., Brill, A., Bui, H., Carwardine, J., Decker, G., Deriy, B., Emery, L., Farnsworth, R., Fors, T., Keane, R., Lenkszus, F., Lill, R., Paskvan, D., Pietryla, A., Shang, H., Shoaf, S., Veseli, S., Wang, J., Xu, S., & Yang, B.X.. FIRST BEAM TESTS OF THE APS MBA UPGRADE ORBIT FEEDBACK CONTROLLER. United States.
Sereno, N. S., Arnold, N., Brill, A., Bui, H., Carwardine, J., Decker, G., Deriy, B., Emery, L., Farnsworth, R., Fors, T., Keane, R., Lenkszus, F., Lill, R., Paskvan, D., Pietryla, A., Shang, H., Shoaf, S., Veseli, S., Wang, J., Xu, S., and Yang, B.X.. Sat . "FIRST BEAM TESTS OF THE APS MBA UPGRADE ORBIT FEEDBACK CONTROLLER". United States. doi:. https://www.osti.gov/servlets/purl/1393938.
@article{osti_1393938,
title = {FIRST BEAM TESTS OF THE APS MBA UPGRADE ORBIT FEEDBACK CONTROLLER},
author = {Sereno, N. S. and Arnold, N. and Brill, A. and Bui, H. and Carwardine, J. and Decker, G. and Deriy, B. and Emery, L. and Farnsworth, R. and Fors, T. and Keane, R. and Lenkszus, F. and Lill, R. and Paskvan, D. and Pietryla, A. and Shang, H. and Shoaf, S. and Veseli, S. and Wang, J. and Xu, S. and Yang, B.X.},
abstractNote = {The new orbit feedback system required for the APS multi-bend acromat (MBA) ring must meet challenging beam stability requirements. The AC stability requirement is to correct rms beam motion to 10 % the rms beam size at the insertion device source points from 0.01 to 1000 Hz. The vertical plane represents the biggest challenge for AC stability which is required to be 400 nm rms for a 4 micron vertical beam size. In addition long term drift over a period of 7 days is required to be 1 micron or less at insertion de- vice BPMs and 2 microns for arc bpms. We present test re- sults of theMBA prototype orbit feedback controller (FBC) in the APS storage ring. In this test, four insertion device BPMs were configured to send data to the FBC for process- ing into four fast corrector setpoints. The configuration of four bpms and four fast correctors creates a 4-bump and the configuration of fast correctors is similar to what will be implemented in the MBA ring. We report on performance benefits of increasing the sampling rate by a factor of 15 to 22.6 kHz over the existing APS orbit feedback system, lim- itations due to existing storage ring hardware and extrapo- lation to theMBA orbit feedback design. FBC architecture, signal flow and processing design will also be discussed.},
doi = {},
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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