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Title: IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION

Abstract

The NSLS II beam injection works with a DC septum, a pulsed septum and four fast kicker magnets. The kicker power supplies each produce a two revolution period pulsed field, 5.2 {micro}s half sine waveform, using {approx}5kA drive voltage. The corresponding close orbit bump amplitude is {approx}15mm. It is desired that the bump is transparent to the users for top-off injection. However, high voltage and short pulse power supplies have challenges to maintain pulse-to-pulse stability and magnet-to-magnet reproducibility. To minimize these issues, we propose implementing a DC local bump on top of the fast bump to reduce the fast kicker strength by a factor of 2/3. This bump uses two storage ring corrector magnets plus one additional magnet at the septum to create a local bump. Additionally, these magnets could provide a DC bump to simulate the septum position effects on the store beam lifetime. This paper presents the detail design of this DC injection bump and related beam dynamics.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
DOE - Office Of Science
OSTI Identifier:
1012596
Report Number(s):
BNL-94895-2011-CP
39KC02000; TRN: US1102338
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference 2011; New York, New York; 20110328 through 20110401
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; AMPLITUDES; BEAM DYNAMICS; BEAM INJECTION; DESIGN; IMPLEMENTATION; KICKER MAGNETS; LIFETIME; MAGNETS; POWER SUPPLIES; STABILITY; STORAGE RINGS; correspoinding close orbit bump amplitude; GeV third generation synchrotron; ring kickers; national synchrotron light source

Citation Formats

Wang, G.M., Shaftan, T., Kramer, S.K., Fliller, R., Guo, W., Heese, R., Yu, L.H., Parker, B., and Willeke, F.J. IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION. United States: N. p., 2011. Web.
Wang, G.M., Shaftan, T., Kramer, S.K., Fliller, R., Guo, W., Heese, R., Yu, L.H., Parker, B., & Willeke, F.J. IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION. United States.
Wang, G.M., Shaftan, T., Kramer, S.K., Fliller, R., Guo, W., Heese, R., Yu, L.H., Parker, B., and Willeke, F.J. Mon . "IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION". United States. doi:. https://www.osti.gov/servlets/purl/1012596.
@article{osti_1012596,
title = {IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION},
author = {Wang, G.M. and Shaftan, T. and Kramer, S.K. and Fliller, R. and Guo, W. and Heese, R. and Yu, L.H. and Parker, B. and Willeke, F.J.},
abstractNote = {The NSLS II beam injection works with a DC septum, a pulsed septum and four fast kicker magnets. The kicker power supplies each produce a two revolution period pulsed field, 5.2 {micro}s half sine waveform, using {approx}5kA drive voltage. The corresponding close orbit bump amplitude is {approx}15mm. It is desired that the bump is transparent to the users for top-off injection. However, high voltage and short pulse power supplies have challenges to maintain pulse-to-pulse stability and magnet-to-magnet reproducibility. To minimize these issues, we propose implementing a DC local bump on top of the fast bump to reduce the fast kicker strength by a factor of 2/3. This bump uses two storage ring corrector magnets plus one additional magnet at the septum to create a local bump. Additionally, these magnets could provide a DC bump to simulate the septum position effects on the store beam lifetime. This paper presents the detail design of this DC injection bump and related beam dynamics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 28 00:00:00 EDT 2011},
month = {Mon Mar 28 00:00:00 EDT 2011}
}

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