High-energy high-luminosity electron-ion collider eRHIC

Litvinenko, V.N.; Beebe‐Wang, J.; Belomestnykh, S.; Ben‐Zvi, I.; Blaskiewicz, M.; Calaga, R.; Chang, X.; Fedotov, A. V.; Gassner, D.; Hammons, L.; Hahn, H.; Hao, Yue; He, Ping; Jackson, W. Roy; Jain, A.; Johnson, E.; Kayran, D.; Kewisch, J.; Luo, Yan; Mahler, G.; McIntyre, G.; Meng, W.; Minty, M.; Parker, B.; Pikin, A.; Pozdeyev, E.; Ptitsyn, V.; Rao, T.; Roser, T.; Skaritka, J.; Sheehy, B.; Tepikian, S.; Than, Y.; Trbojević, D.; Tsentalovich, E.; Tsoupas, N.; Tuozzolo, J.; Wang, Gang; Webb, Stephen W.; Wu, Qiong; Xu, Wei; Zelenski, Anatoly

doi:10.48550/arxiv.1109.2819

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…The Electron Ion Collider [286]. At the horizon of ∼2020, a future EIC could be realized as an upgrade to the existing RHIC ion collider (eRHIC).…”

Section: Discussionmentioning

confidence: 99%

The quark and gluon structure of the proton

Perez¹,

Rizvi²

2013

Rep. Prog. Phys.

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In this paper we present a review of the structure of the proton and the current status of our knowledge of the parton distribution functions (PDFs). The lepton-nucleon scattering experiments which provide the main constraints in PDF extractions are introduced and their measurements are discussed. Particular emphasis is given to the HERA data which cover a wide kinematic region. Hadron-hadron scattering measurements which provide supplementary information are also discussed. The methods used by various groups to extract the PDFs in QCD analyses of hard scattering data are presented and their results are compared. The use of existing measurements allows predictions for cross sections at the LHC to be made. A comparison of these predictions for selected processes is given. First measurements from the LHC experiments are compared to predictions and some initial studies of the impact of this new data on the PDFs are presented.

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“…The Electron Ion Collider [286]. At the horizon of ∼2020, a future EIC could be realized as an upgrade to the existing RHIC ion collider (eRHIC).…”

Section: Discussionmentioning

confidence: 99%

The quark and gluon structure of the proton

Perez¹,

Rizvi²

2013

Rep. Prog. Phys.

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“…Each xBSM installation images x-rays from a hard-bend magnet through a single-or multiple-slit optical element 3 onto a detector, a 32-pixel array of photodiodes read out with fast electronics. Before describing the apparatus in detail in Sect.…”

Section: Methods and Toolsmentioning

confidence: 99%

“…Precision measurement of vertical bunch size plays an increasingly important role [1] in the design and operation of the current and future generation of electron storage rings. Such facilities include an e + e − collider (Super-KEKB [2]), an e −ion collider (EIC [3]), a multitude of present and future light sources [4,5] (e.g., PEPLS [6]), and a positron damping ring for an e + e − linear collider (ILC [7] or CLIC [8]). For each of these machines, performance (e.g., luminosity or brightness) is directly related to the vertical emittance (and thus the vertical beam size).…”

Section: Introductionmentioning

confidence: 99%

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Vertical beam size measurement in the CESR-TA storage ring using x-rays from synchrotron radiation

Alexander

Chatterjee

Conolly

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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We describe the construction and operation of an x-ray beam size monitor (xBSM), a device measuring e + and e − beam sizes in the CESR-TA storage ring using synchrotron radiation. The device can measure vertical beam sizes of 10 − 100 µm on a turn-by-turn, bunch-by-bunch basis at e ± beam energies of ∼ 2 GeV. At such beam energies the xBSM images x-rays of ≈1-10 keV (λ ≈ 0.1 − 1 nm) that emerge from a hard-bend magnet through a single-or multiple-slit (coded aperture) optical element onto an array of 32 InGaAs photodiodes with 50 µm pitch. Beamlines and detectors are entirely in-vacuum, enabling single-shot beam size measurement down to below 0.1 mA (2.5 × 10 9 particles) per bunch and inter-bunch spacing of as little as 4 ns. At E b = 2.1 GeV, systematic precision of ∼ 1 µm is achieved for a beam size of ∼ 12 µm; this is expected to scale as ∝ 1/σ b and ∝ 1/E b . Achieving this precision requires comprehensive alignment and calibration of the detector, optical elements, and x-ray beam. Data from the xBSM have been used to extract characteristics of beam oscillations on long and short timescales, and to make detailed studies of low-emittance tuning, intra-beam scattering, electron cloud effects, and multi-bunch instabilities.

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High-energy high-luminosity electron-ion collider eRHIC

Cited by 2 publications

References 3 publications

The quark and gluon structure of the proton

The quark and gluon structure of the proton

Vertical beam size measurement in the CESR-TA storage ring using x-rays from synchrotron radiation

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