STAR TPC gas system

Kotchenda, L.; Kozlov, Sergey M.; Kravtsov, P.; Markov, А. A.; Strikhanov, M.; Stringfellow, B.; Trofimov, V.; Wells, R.; Wieman, H.

doi:10.1016/s0168-9002(02)01967-8

Cited by 11 publications

(6 citation statements)

References 2 publications

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“…It is located inside a large solenoidal magnet that operates at 0.5 T [90]. The TPC is filled with P10 gas (10% methane, 90% argon) regulated at 2 mbar above atmospheric pressure [91]. It can record the tracks of particles, measure their momenta, The Muon Telescope Detector (MTD) [95,96] is also based on MRPC technology [93].…”

Section: The Star Detectormentioning

confidence: 99%

Antinuclei in heavy-ion collisions

et al. 2018

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We review progress in the study of antinuclei, starting from Dirac's equation and the discovery of the positron in cosmic-ray events. The development of proton accelerators led to the discovery of antiprotons, followed by the first antideuterons, demonstrating that antinucleons bind into antinuclei. With the development of heavy-ion programs at the Brookhaven AGS and CERN SPS, it was demonstrated that central collisions of heavy nuclei offer a fertile ground for research and discoveries in the area of antinuclei. In this review, we emphasize recent observations at Brookhaven's Relativistic Heavy Ion Collider and at CERN's Large Hadron Collider, namely, the antihypertriton and the antihelium-4, as well as measurements of the mass difference between light nuclei and antinuclei, and the interaction between antiprotons. Physics implications of the new observations and different production mechanisms are discussed. We also consider implications for related fields, such as hypernuclear physics and spacebased cosmic-ray experiments.

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Section: The Star Detectormentioning

confidence: 99%

Antinuclei in heavy-ion collisions

et al. 2018

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“…P10 (90% Argon + 10% Methane) is the working gas in the TPC. The gas system (discussed in detail in [7]) circulates the gas in the TPC and maintains purity, reducing electro negative impurities such as oxygen and water which capture drifting electrons. To keep the electron absorption to a few percent, the oxygen is held below 100 parts per million and water less than 10 parts per million.…”

Section: Drift Gasmentioning

confidence: 99%

“…The TPC is filled with P10 gas (10% methane, 90% argon) regulated at 2 mbar above atmospheric pressure [7]. This gas has long been used in TPCs.…”

Section: Introductionmentioning

confidence: 99%

The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC

Anderson

Berkovitz

Betts

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

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644

337

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The STAR Time Projection Chamber (TPC) is used to record collisions at the Relativistic Heavy Ion Collider (RHIC). The TPC is the central element in a suite of detectors that surrounds the interaction vertex. The TPC provides complete coverage around the beam-line, and provides complete tracking for charged particles within ± 1.8 units of pseudo-rapidity of the center-of-mass frame. Charged particles with momenta greater than 100 MeV/c are Preprint submitted to Elsevier Science 5 February 2008 recorded. Multiplicities in excess of 3,000 tracks per event are routinely reconstructed in the software. The TPC measures 4 m in diameter by 4.2 m long, making it the largest TPC in the world.

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“…While the magnitude of the drift velocity is not critical here, an optimal tracking performance relies on a uniform and stable drift velocity in the large gas volume, which in turn poses a constraint on the gas system [43]. The drift velocity varies with the alkane concentration.…”

Section: A Drift Velocitymentioning

confidence: 99%

Neutrino-hydrogen interactions with a high-pressure time projection chamber

Hamacher-Baumann,

Lu,

Martín-Albo

2020

Preprint

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We investigate the idea of detecting pure neutrino-hydrogen interactions in a multinuclear target using the transverse kinematic imbalance (TKI) technique [Lu, et al., Phys. Rev. D92, 051302 (2015)] in a high-pressure Time Projection Chamber (HPTPC). With full-solid-angle acceptance, MeV-level-energy detection threshold, state-of-the-art tracking resolution, and an O(100 m 3 ) gas volume at 10 bar, a HPTPC could provide an opportunity to realize this technique. We propose the use of hydrogen-rich gases in the TPC to achieve high detection purity with large hydrogen mass. With the projected neutrino beam exposure at the DUNE experiment, neutrino-hydrogen events of the order of 10 4 per year with purity above 90 % could be achieved with such a HPTPC using methane gas. In this paper, we present a systematic study of the event rate and purity for a variety of argon-alkane mixtures, and examine these gas candidates for the TPC tracking-related properties.

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STAR TPC gas system

Cited by 11 publications

References 2 publications

Antinuclei in heavy-ion collisions

Antinuclei in heavy-ion collisions

The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC

Neutrino-hydrogen interactions with a high-pressure time projection chamber

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