Brown et al. v. Board of Education of Topeka et al

Fraenkel, Ernst

doi:10.1007/978-3-322-96273-7_9

Cited by 7 publications

(12 citation statements)

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“…The resulting high sensitivity to single photons is due to the efficient GEM's optical screening, preventing avalanche-induced photons to hit the PC. The reflective-PC GPM has, in addition, very low sensitivity to chargedparticles background, as discussed in [14]; relativistic-particle rejection factors 4100 were recently demonstrated [15]. This property is of prime importance in Cherenkov detectors operating under intense background, such as in relativistic heavy-ion experiments.…”

Section: Uv Gpmsmentioning

confidence: 98%

“…The UV-sensitive ''reflective'' multi-GEM GPM is a mature technique; large-area detectors are under construction for a Hadron-Blind Cherenkov detector (HBD) of the PHENIX (RHIC-BNL) relativistic heavy-ion experiment [15]; others are developed for RICH [19]. Similar photon detectors, operated at cryogenic temperatures, are conceived for the XENON dark-matter experiment [20], for dark-matter and neutrino physics [21], for a liquid-Xe PET project [22] etc.…”

Section: Uv Gpmsmentioning

confidence: 99%

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Ion-induced effects in GEM and GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range

Breskin

Mörmann

Lyashenko

et al. 2005

Nuclear Instruments and Methods in Physics Research Section A:

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We report on the progress in the study of cascaded GEM and GEM/MHSP gas avalanche photomultipliers operating at atmospheric pressure, with CsI and bialkali photocathodes. They have single-photon sensitivity, ns time resolution and good localization properties. We summarize operational aspects and results, with the highlight of a high-gain stable gated operation of a visible-light device. Of particular importance are the results of a recent ion-backflow reduction study in different cascaded multipliers, affecting the detector's stability and the photocathode's lifetime. We report on the significant progress in ion-blocking and provide first results on bialkali-photocathode aging under gas multiplication. r

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Section: Uv Gpmsmentioning

confidence: 98%

Section: Uv Gpmsmentioning

confidence: 99%

Ion-induced effects in GEM and GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range

Breskin

Mörmann

Lyashenko

et al. 2005

Nuclear Instruments and Methods in Physics Research Section A:

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“…At RHIC energies, the factor of two larger temperatures reached compared to SPS prefigure that the ρ should exhibit a completely "melted" line-shape if, as expected from the lattice, the chiral and deconfinement transitions occur at the same T crit . The ρ measurement in the dielectron channel will be possible in PHENIX with the recently installed hadron-blind-detector [194] which will allow to suppress by two orders of magnitude the large combinatorial background arising from lightmeson Dalitz decays and photon conversions, while preserving 50% of the signal.…”

Section: Chiral Symmetry Restoration: In-medium Vector Mesonsmentioning

confidence: 99%

Quark–gluon matter

d’Enterria

2007

J. Phys. G: Nucl. Part. Phys.

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Abstract.A concise review of the experimental and phenomenological progress in highenergy heavy-ion physics over the past few years is presented. Emphasis is put on measurements at BNL-RHIC and CERN-SPS which provide information on fundamental properties of QCD matter at extreme values of temperature, density and low-x. The new opportunities accessible at the LHC, which may help clarify some of the current open issues, are also outlined.

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“…An extensive simulation done for the HBD [4] demonstrated that the only way to suppress the dilepton combinatorial background without loosing the signal requires electron identification. The e/π rejection factor must be 100 with an electron detection efficiency of 90%.…”

Section: Hbd Conceptmentioning

confidence: 99%

Hadron Blind Detector for the PHENIX Experiment at RHIC

Milov

2006

AIP Conference Proceedings

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Abstract. The PHENIX collaboration has designed a conceptually new Hadron Blind Detector (HBD) for electron identification in high density hadron environment. The HBD will identify low momentum electron-positron pairs to reduce the combinatorial background in the mass region below 1 GeV/c 2 . The HBD shall be installed in PHENIX during the 2007 physics run.The HBD is a windowless proximity focusing Cherenkov detector with a radiator length of 50 cm, CsI photocathode and three layers of Gas Electron Multipliers (GEM) for gas amplification. Pure CF 4 serves both as a radiator and as a detector gas. The radiation budget of the device is less than 3% of a radiation length.

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Brown et al. v. Board of Education of Topeka et al

Cited by 7 publications

References 0 publications

Ion-induced effects in GEM and GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range

Ion-induced effects in GEM and GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range

Quark–gluon matter

Hadron Blind Detector for the PHENIX Experiment at RHIC

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