AGS new fast extraction system and the single bunch extraction test
For the neutrino physics program and for the CBA injection, a new fast extraction system has been implemented to improve the extraction efficiency and the quality of the extracted beam. Central to the new system is a new fast kicker, placed at the H5 straight section, capable of rising between bunches, t/sub r/ < 170 nsec, and staying constant for 2.6 ..mu..sec with flat top ripple less than +-1.5%. So far, the system has been operated for longer than 3000 hours and routinely extracts 10/sup 13/ ppp at 99% efficiency. Experiment 745 on QCD test requires a single AGS bunch of 40 nsec. For this purpose another fast kicker was placed at the E5 straight section and powered by a new pulser to produce a half sinusoidal pulse with both a rise and fall time of 200 nsec. A single AGS bunch was extracted through the slow beam channel at 22 GeV/c leaving the remaining 11 bunches undisturbed which continued to be accelerated to 29.4 GeV/c and extracted by the H5 kicker through the fast beam channel. Because the ring circumference ratio of CBA to the AGS is 4-3/4, some of the injected beam from the AGS has to contain 11 bunches instead of 12; consequently, this single bunch extraction mode will also be used for CBA injection.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6332831
- Report Number(s):
- BNL-32782; CONF-830311-40; ON: DE83010066
- Resource Relation:
- Conference: Particle accelerator conference, Santa Fe, NM, USA, 21 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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New AGS fast extraction system
H5 fast-kicker-magnet pulser
Related Subjects
ISABELLE STORAGE RINGS
BEAM EXTRACTION
KICKER MAGNETS
MAGNETIC FIELD RIPPLES
PERFORMANCE
PULSE RISE TIME
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETIC FIELD CONFIGURATIONS
MAGNETS
STORAGE RINGS
TIMING PROPERTIES
430302* - Particle Accelerators- Injection & Extraction Systems