Proton Beam Polarimetry at BNL

Spinka, H.

doi:10.1063/1.1607246

Cited by 3 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…We consider only the polarimeters employed at RHIC. An overview of polarized proton polarimetry in the BNL complex, from the injector linac through to RHIC, is given by Spinka (2003). There are two types of devices in RHIC, a fast relative polarimeter (pC CNI polarimeter) based on proton-carbon elastic scattering in the Coulomb nuclear interference (CNI) region, and an absolute polarimeter using elastic proton-proton scattering, also in the CNI region.…”

Section: General Remarksmentioning

confidence: 99%

“…Its analysing power cannot be determined by a self-calibration method like the elastic pp polarimeter. Up to 2003 the analysing power of the CNI polarimeter had only been calibrated at the RHIC injection energy of 24 GeV (Spinka 2003). With the installation of the pp gas jet polarimeter in 2004, the CNI polarimeters could be calibrated at 100 GeV.…”

Section: General Remarksmentioning

confidence: 99%

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Spin-polarized charged particle beams in high-energy accelerators

2005

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We present a comprehensive survey of the dynamics of spin-polarized beams in high-energy particle accelerators. A major theme of this review is to clarify the distinction between the properties of an individual particle-a spin-and that of a beam-the polarization. We include work from a number of institutions, including high-and medium-energy facilities, synchrotron light sources and muon storage rings (including a proposal to measure the muon electric dipole moment) and, briefly, linear accelerators and recirculating linacs. High-precision tests of the Standard Model using spin-polarized beams are reviewed; also innovative studies using spin dynamics as a tool for accelerator physics per se. We include important historical works as well as modern developments in the field. The fundamental theory is derived in detail, starting from the basic principles of quantum mechanics, electrodynamics and statistical mechanics, as well as 'accelerator physics'. The principal theoretical formulae in the field (Froissart-Stora, Sokolov-Ternov and Derbenev-Kondratenko) are presented, with in-depth attention to the quantum-statistical mechanics, as opposed to purely 'accelerator physics'.

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Section: General Remarksmentioning

confidence: 99%

Section: General Remarksmentioning

confidence: 99%

Spin-polarized charged particle beams in high-energy accelerators

2005

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“…Methods are being developed to average out any relationship between intensity and polarization by reversing the spins of the stored beams and by recogging the beams so that different bunches collide. When measuring transverse single spin asymmetries, an azimuthally symmetric detector configuration can be used to measure spin-dependent cross ratios (spin up/down yields with left/right detectors), thereby making detector acceptance and luminosity asymmetries higher order corrections [13]. For observables involving longitudinal polarization there is no spin-dependent modulation of scattering rates that varies harmonically with the azimuthal angle.…”

Section: Spin Asymmetry Measurements In a Collidermentioning

confidence: 99%

Spin Physics at RHIC

Bland¹

2003

AIP Conference Proceedings

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Abstract. The physics goals that will be addressed by colliding polarized protons at the Relativistic Heavy Ion Collider (RHIC) are described. The RHIC spin program provides a new generation of experiments that will unfold the quark, anti-quark and gluon contributions to the proton's spin. In addition to these longer term goals, this paper describes what was learned from the first polarized proton collisions at √ s=200 GeV. These collisions took place in a five-week run during the second year of RHIC operation.

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Cross Sections and Transverse Single-Spin Asymmetries in Forward Neutral-Pion Production from Proton Collisions ats=200 GeV

Adams¹,

Adler²,

Aggarwal³

et al. 2004

Phys. Rev. Lett.

233

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Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at sqrt[s]=200 GeV are reported. The cross section is generally consistent with next-to-leading order perturbative QCD calculations. The analyzing power is small at x(F) below about 0.3, and becomes positive and large at higher x(F), similar to the trend in data at sqrt[s]< or =20 GeV. The analyzing power is in qualitative agreement with perturbative QCD model expectations. This is the first significant spin result seen for particles produced with p(T)>1 GeV/c at a polarized proton collider.

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Proton Beam Polarimetry at BNL

Cited by 3 publications

References 1 publication

Spin-polarized charged particle beams in high-energy accelerators

Spin-polarized charged particle beams in high-energy accelerators

Spin Physics at RHIC

Cross Sections and Transverse Single-Spin Asymmetries in Forward Neutral-Pion Production from Proton Collisions ats=200 GeV

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