Polarization preservation in the AGS

Conference · Mon Aug 01 04:00:00 EDT 1983 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6886868

Ratner, L G

The successful operation of a high energy polarized beam at the Argonne Zero Gradient Synchrotron with the concommitant development of depolarizing resonance correction techniques has led to the present project of commissioning such a beam at the Brookhaven AGS. A description of the project was presented at the 1981 National Accelerator Conference. The current paper presents a more detailed description of how Brookhaven personnel plan to preserve the polarization during acceleration and how they intend to tune through some 50 resonances and reach their goal of a 26 GeV polarized proton beam with greater than 60% polarization. Some aspects of their resonance correction techniques are to cross resonances by fast passage and not rely on spin-flip; to use the slow AGS tune shifting quadrupoles to avoid hitting integer or half-integer resonances at v = 9.0 and 8.5; and to pulse the ring sextupoles in order to flatten the vertical tune profile and keep the total tune shift constant as a function of radius. They are also prepared to use a compensating horizontal (v /SUB x/ ) shift during the correction time should this prove necessary.

• Research Organization: Accelerator Dep.'t Brookhaven Nat.'l Lab., Assoc. Universities, Inc.
• OSTI ID: 6886868
• Report Number(s): CONF-830311-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-30:4
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATION
ACCELERATORS
BEAMS
BROOKHAVEN AGS
CORRECTIONS
CYCLIC ACCELERATORS
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
NUCLEON BEAMS
ORIENTATION
PARTICLE BEAMS
POLARIZED BEAMS
PROTON BEAMS
RESONANCE
SPIN ORIENTATION
SYNCHROTRONS
TUNING