skip to main content

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

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:
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
Research Org:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org:
DOE - Office Of Science
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