The CsI-based ring imaging detector for the ALICE experiment: technical description of a large prototype

Piuz, F.; Andres, Y.; Braem, A.; Davenport, M.; Mauro, A. Di; Goret, B.; Martinengo, P.; Monno, E.; Nappi, E.; Paić, G.; Posa, F.; Raynaud, Jean‐Pierre; Santiard, J.C.; Stucchi, S.; Tomasicchio, G.; Williams, Thomas D.

doi:10.1016/s0168-9002(99)00293-4

Cited by 34 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Large area ultraviolet (UV)-sensitive imaging photomultipliers combining CsI photocathodes and wire chambers, sensitive to single photons, have already become a standard part of ring imaging Cherenkov (RICH) detectors [3]. More recent works [4]- [6] suggested the use of cascades of gas electron multipliers (GEMs), introduced by Sauli [7].…”

Section: Introductionmentioning

confidence: 99%

Methods of preparation and performance of sealed gas photomultipliers for visible light

Balcerzyk

Mörmann

Breskin

et al. 2003

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

We describe the preparation of a sealed gas-filled photomultiplier (GPMT) for the visible spectral range and present the properties of the first prototypes. They consist of a 50 mm diameter semitransparent bialkali (K-Cs-Sb) photocathode coupled to a 30 mm 30 mm Kapton multi-gas electron multiplier (GEM). High gain of 2 10 4 in two-GEM mode and a quantum efficiency of 13% at 405 nm have been reached at 700 Torr of Ar/CH 4 (95:5). The detector structure and experimental setup are described; results are presented on the GPMT gain, ion-feedback and its suppression, stability, and other critical parameters in various gas mixtures. Hot sealing techniques with In/Sn and In/Bi solders are discussed.Index Terms-Bialkali photocathode, gas detectors, sealed gas electron multipliers.

show abstract

Section: Introductionmentioning

confidence: 99%

Methods of preparation and performance of sealed gas photomultipliers for visible light

Balcerzyk

Mörmann

Breskin

et al. 2003

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

show abstract

“…Fig. 1 shows the principle scheme of the CsI-RICH detector; a detailed description can be found in [2,7]. The HMPID RICH has a proximity focusing geometry; the radiator, 15 mm thick, is liquid C 6 F 14 contained in a Neoceram ® tray with a 5 mm fused silica exit window to transmit the UV Cherenkov photons.…”

Section: Nuclear Instruments and Methods In Physics Researchmentioning

confidence: 99%

Aging of large-area CsI photocathodes for the ALICE HMPID prototypes

Braem¹,

Davenport²,

Mauro³

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

The ALICE HMPID RICH detector is equipped with CsI photocathodes in a MWPC for the detection of Cherenkov photons. The long term operational experience with large area CsI photocathodes will be described. The RICH prototypes have shown a very high stability of operation and performance, at a gain of 10 5 and with rates up to 2x10 4 cm -2 s -1 . When exposure to air has been avoided, no degradation of the CsI quantum efficiency has been observed on photocathodes periodically exposed to test-beams over 7 years, corresponding to local integrated charge densities of ~ 1 mC cm -2 . The results of limited exposures to oxygen and humidity will also be presented.

show abstract

“…The final test results of the ring imaging detector with the CsI photocathode and with two C 6 F 14 radiators and four photocathodes (each has a surface area of 64 × 38 cm 2 ) are described in [128]. The detector with a photocathode surface of 32 × 30 cm 2 and 64 × 40 cm 2 [135] was studied in [129]. Figure 27 shows the scheme of the detector prototype, designed for the ALICE setup.…”

Section: Transition Radiation Detectormentioning

confidence: 99%

“…Detectors on cesium iodide (CsI) in the photocon verter [1,[135][136][137][138][139][140][141][142][143]. Similar photocathodes play an important role in experiments on high energy physics during constructions of fast ring image chambers.…”

mentioning

confidence: 99%

Special features of detectors, electronics, and trigger system of the ALICE setup

Nikityuk

Самойлов

2012

Phys. Part. Nuclei

View full text Add to dashboard Cite

Special features and parameters of detectors, front end electronics, and trigger electronics of the ALICE setup, which is intended for investigations of ultrarelativistic nucleon-nucleon collisions at the LHC and for studies of heavy ion collisions, starting from protons to several types of ions, which have 5.5 TeV/nucleon energy in the center of mass, are described. One of the first collisions of lead ions was recorded by the ALICE detector

show abstract

The CsI-based ring imaging detector for the ALICE experiment: technical description of a large prototype

Cited by 34 publications

References 5 publications

Methods of preparation and performance of sealed gas photomultipliers for visible light

Methods of preparation and performance of sealed gas photomultipliers for visible light

Aging of large-area CsI photocathodes for the ALICE HMPID prototypes

Special features of detectors, electronics, and trigger system of the ALICE setup

Contact Info

Product

Resources

About