Possibility of polarized beams at the AGS
Conference
·
OSTI ID:6330970
A two week study was held at Brookhaven this summer to investigate polarized proton acceleration at the AGS in more detail and to produce a preliminary design and cost estimate. The Brookhaven study discovered no new problems which cannot be solved. A polarized proton ion source of the H/sup -/ type is preferred, which could yield pulses of 75% polarized H/sup -/ ions with an intensity of 10 to 100 ..mu..amp and a length of 1 to 3 msec. Upon injection this would result in an AGS intensity of 3 x 10/sup 10/ to 10/sup 12/ polarized protons per pulse which, together with the 2 sec repetition rate and the high extraction efficiency of the AGS, would yield an extracted beam intensity 5 to 150 times larger than that of the ZGS. Twelve new pulsed tune-shift quadrupoles will be necessary to jump the intrinsic resonances while the existing 96 correction dipoles can be used to tune out the imperfection harmonics. Most of the polarization monitors necessary are simply extensions of existing polarimeters; however, a fast internal polarimeter with an associated thin internal target would be useful for rapid tuning during the acceleration cycle. With these modifications it should be possible to accelerate polarized protons through the 8 intrinsic and 47 imperfection resonances in the AGS up to 23 GeV/c by late 1980. Although no decision has yet been reached with regard to the implementation of such a program, it is presently being considered together with other options for future AGS operation.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); State Univ. of New York, Stony Brook (USA)
- DOE Contract Number:
- EY-76-C-02-0016
- OSTI ID:
- 6330970
- Report Number(s):
- BNL-25487; CONF-7810119-2
- Country of Publication:
- United States
- Language:
- English
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