Status of triple GEM muon chambers for the LHCb experiment

Alfonsi, M.; Bencivenni, G.; Bonivento, W.; Cadeddu, S.; Cardelli, E.; Cardini, A.; Ciambrone, P.; Fois, Eleonora; Lai, A.; Murtas, F.; Lener, M. Poli; Raspino, D.

doi:10.1016/j.nima.2007.07.123

Cited by 9 publications

(2 citation statements)

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“…As shown below, the detector continuously operating with 55 Fe X-ray source at the highest gas gain, 32000, withstands 0.5 millions discharges without damage to materials and functionality. As known from the experience described in [16], the gas gain of ~5000 is sufficient for detection of charged particles in the case of 3 mm thick gas gap with Ar/CO2/CF4 (45/15/45) gas mixture and readout pads of 2.5 cm 2 so that there is almost no charge sharing.…”

Section: Jinst 15 C09041mentioning

confidence: 97%

The Well (micro-Well) Electron Multiplier with the DLC anode—a key element of the robust and fast 2D-position sensitive MPGD

et al. 2020

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We report the results of first studies of the small resistive Well radiation detector (https://indico.inp.nsk.su/event/20/session/9/contribution/205/material/poster/0.pdf) based on the Well Electron Multiplier with the DLC (Diamond-Like Carbon) anode. The DLC film covers the printed circuit mesh surrounding a group of holes. The prototype built with this technology provides fast, 200 ns, evacuation of electrons from the resistive layer with surface resistivity of 25 MOhm/square. As shown with 55Fe X-ray source, the detector with the mesh surrounding each hole withstands 0.5 millions discharges at the gas gain of 32,000 without damage to materials and functionality.

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