Polarization Measurements of RHIC-pp RUN05 Using CNI pC-Polarimeter

Nakagawa, I.; Alekseev, I.; Bravar, A.; Bunce, G.; Dhawan, S.; Eyser, K. O.; Gill, R.; Haeberli, W.; Huang, H.; Jinnouchi, O.; Makdisi, Y. I.; Nass, A.; Okada, Hiroaki; Stephenson, E. J.; Svirida, D. N.; Wise, T.; Wood, J.; Zelenski, A.

doi:10.1063/1.2750924

Cited by 6 publications

(4 citation statements)

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“…For example, at RHIC two types of polarimeter are used to perform proton beam polarization measurements. One of them, the p-Carbon polarimeter [456], uses carbon fibers as the scattering target with large scattering rates, periodically measuring the polarization. Another one is the H-jet polarimeter [457], which continuously performs non-invasive polarization measurements, just analogous to the Compton polarimeter for the electron beam.…”

Section: Luminosity and Polarization Measurementsmentioning

confidence: 99%

Electron-ion collider in China

et al. 2021

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Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as nuclei. As a future high energy nuclear physics project, an Electron-ion collider in China (EicC) has been proposed. It will be constructed based on an upgraded heavy-ion accelerator, High Intensity heavy-ion Accelerator Facility (HIAF) which is currently under construction, together with a new electron ring. The proposed collider will provide highly polarized electrons (with a polarization of ∼80%) and protons (with a polarization of ∼70%) with variable center of mass energies from 15 to 20 GeV and the luminosity of (2–3) × 1033 cm−2 · s−1. Polarized deuterons and Helium-3, as well as unpolarized ion beams from Carbon to Uranium, will be also available at the EicC.The main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region, including 3D tomography of nucleon; the partonic structure of nuclei and the parton interaction with the nuclear environment; the exotic states, especially those with heavy flavor quark contents. In addition, issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the EicC. In order to achieve the above-mentioned physics goals, a hermetical detector system will be constructed with cutting-edge technologies.This document is the result of collective contributions and valuable inputs from experts across the globe. The EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United States. The success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China.

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Section: Luminosity and Polarization Measurementsmentioning

confidence: 99%

Electron-ion collider in China

et al. 2021

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“…For example, at RHIC two types of polarimeter are used to perform proton beam polarization measurements. One of them, the 𝑝-Carbon polarimeter [450], uses carbon fibers as the scattering target with large scattering rates, periodically measuring the polarization.…”

Section: Luminosity and Polarization Measurementsmentioning

confidence: 99%

Electron-Ion Collider in China

Anderle,

Bertone,

Cao

et al. 2021

Preprint

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Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as nuclei. As a future high energy nuclear physics project, an Electron-ion collider in China (EicC) has been proposed. It will be constructed based on an upgraded heavy-ion accelerator, High Intensity heavy-ion Accelerator Facility (HIAF) which is currently under construction, together with a new electron ring. The proposed collider will provide highly polarized electrons (with a polarization of ∼80%) and protons (with a polarization of ∼70%) with variable center of mass energies from 15 to 20 GeV and the luminosity of (2-3) × 10 33 cm −2 s −1 . Polarized deuterons and Helium-3, as well as unpolarized ion beams from Carbon to Uranium, will be also available at the EicC.The main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region, including 3D tomography of nucleon; the partonic structure of nuclei and the parton interaction with the nuclear environment; the exotic states, especially those with heavy flavor quark contents. In addition, issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the EicC. In order to achieve the above-mentioned physics goals, a hermetical detector system will be constructed with cutting-edge technologies. This document is the result of collective contributions and valuable inputs from experts across the globe. The EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United States.The success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China.

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“…Small droop in the luminosity at the end of the run was the result of several stores with longer than optimal store time. Figure 2 shows the proton beam average polarization measured in every store by CNI polarimeter [3]. Another polarimeter, based on hydrogen jet, also made the absolute measurements of the beam polarization during the course of the run [4].…”

Section: Luminosity and Polarization During 100 Gev Runmentioning

confidence: 99%

“…For two weeks the machine operation was devoted to the experiments with polarized protons at 3 1.2 GeV energy. The total luminosity integral of 0.35 pb-' was delivered to three participating experiments: PHENIX, STAR and BRAHMS.…”

Section: Luminosity and Polarization During 312 Gev Runmentioning

confidence: 99%

RHIC Performance with Polarized Protons in Run-6

Ptitsyn¹,

Ahrens²,

Bai³

et al. 2007

AIP Conference Proceedings

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The RHIC polarized proton run (Run-6) in 2006 started on February 1 and continued for 21 weeks. The Run-6 included the machine operation at different beam energies and with different orientation of beam polarization at the collision points. The machine operation at lOOGeV and 31.2 GeV provided physics data of polarized proton collisions to the STAR, PHENIX and BRAHMS experiments. Record levels of the luminosity (up to 3.5.1031 cm-* s-' peak) and proton beam polarization (up to 65%) were achieved during the lOOGeV operation. The beam polarization was preserved during the acceleration by using Siberian Snakes, based on helical magnets. The polarization orientation at STAR and PHENIX experiments was controlled with helical spin rotators. During different stages of the run the physics data were provided with longitudinal, vertical and horizontal orientations of the beam polarization at the collision points. Total luminosity integrals of 45 pb-' at 100 GeV and 0.35 pb" at 3 1.2 GeV were delivered to the experiments.

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Polarization Measurements of RHIC-pp RUN05 Using CNI pC-Polarimeter

Cited by 6 publications

References 0 publications

Electron-ion collider in China

Electron-ion collider in China

Electron-Ion Collider in China

RHIC Performance with Polarized Protons in Run-6

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