THGEM-based photon detectors for the upgrade of COMPASS RICH-1

Alexeev, M.; Azevedo, C.D.R.; Birsa, R.; Bradamante, F.; Büchele, M.; Chiosso, M.; Ciliberti, P.; Torre, S. Dalla; Dasgupta, S.; Finger, M.; Fischer, H.; Gobbo, B.; Gregori, M.; Hamar, G.; Herrmann, F.; Levorato, S.; Maggiora, A.; Makke, N.; Martin, A.; Menon, G.; Nový, J.; Panzieri, D.; Pereira, F.; Santos, C.; Sbrizzai, G.; Schopferer, S.; Slunečka, M.; Steiger, K.; Steiger, L.; Šulc, M.; Tessarotto, F.; Veloso, J.F.C.A.

doi:10.1016/j.nima.2013.08.020

Cited by 27 publications

(3 citation statements)

References 54 publications

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“…For example, the Digital, or Semi-Digital Hadron Calorimeter ((S)DHCAL) [9,10], foreseen for the SiD experiment in the future international linear collider (ILC) [11], the overall instrumented area will be as large as ∼4000 m 2 . Another application could be photon detection for large-area UV-RICH detectors [12,13]. Previous studies with large area THGEM detectors are described in [14] and in [15]; in the latter, two 30 × 30 cm 2 double-faced THGEM electrodes in cascade are followed by a MICROMEGAS.…”

Section: Introductionmentioning

confidence: 99%

In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector

et al. 2016

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In-beam evaluation of a fully-equipped medium-size 30 × 30 cm 2 Resistive Plate WELL (RPWELL) detector is presented. It consists here of a single element gas-avalanche multiplier with Semitron ESD225 resistive plate, 1 cm 2 readout pads and APV25/SRS electronics. Similarly to previous results with small detector prototypes, stable operation at high detection efficiency (>98%) and low average pad multiplicity (∼1.2) were recorded with 150 GeV muon and high-rate pion beams, in Ne/(5%CH 4 ), Ar/(5%CH 4 ) and Ar/(7%CO 2 ). This is an important step towards the realization of robust detectors suitable for applications requiring large-area coverage; among them Digital Hadron Calorimetry.

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Section: Introductionmentioning

confidence: 99%

In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector

et al. 2016

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“…An Ar/CH 4 (60/40) gas mixture was used, and the high voltage was provided to each of the six sectors of the PD via individual resistive dividers by six independent power supply channels. A truncated cone radiator (made of fused silica) was placed on the beam axis and equipped with a cylindrical interceptor having a remotely controlled movement: the number of detected photons per event was shown to decrease linearly with the increase of the interceptor position [6]. A trigger system based on a 5-fold scintillator coincidence allowed selecting beam particles traveling along the radiator axis.…”

Section: Thgem-based Pd Prototypesmentioning

confidence: 99%

Status and progress of novel photon detectors based on THGEM and hybrid MPGD architectures

et al. 2013

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Recent progress in the development of THGEM-based photon detectors confirm the validity of this novel technology. Detectors made of THGEMs, arranged in a three layer architecture, with a CsI coating on the first layer (acting as a reflective photocathode), have been produced and operated in laboratory and during test beam runs: they provide a gain of 105 and a time resolution better than 10 ns. Improvements in the production of THGEMs with 300 × 300 mm2 active area have recently been introduced leading to a uniform gain response and performance similar to that provided by the small area THGEMs. Promising results have been obtained by combining THGEM and Micromegas technologies to form a hybrid MPGD-based photon detector: the first prototype has proved to stably operate at large gain in a variety of gas mixtures, including pure CH4 and to provide a low ion backflow rate. The RICH-1 detector of the COMPASS Experiment at CERN SPS will be equipped with a set of MPGD-based photon detectors replacing MWPC-based ones.

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“…In this context, Gaseous Photodetectors [6] employing Multiwire [10] and Drift [11] Chambers, Multi-step avalanche chambers [12], cascaded GEMs [13][14][15] and THGEM-based [16][17][18][19] detectors have been playing an important role in experiments. As demonstrated in [20], the more recent "hybrid" CsI-coated THGEM-Micromegas has shown to be an efficient upgrade for the COMPASS-RICH-I.…”

Section: Introductionmentioning

confidence: 99%

Single-electron spectra in RPWELL-based detectors

Bhattacharya¹,

Tesi²,

Shaked-Renous³

et al. 2021

J. Inst.

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Single-electron spectra are the key ingredient in the efficient detection of single UV-photons. In this work, we investigated the shape of single-photoelectron spectra in single- and double-stage Resistive Plate WELL (RPWELL) detector configurations, operated in Ne/CH4 and Ar/CH4. Discharge-free operation was reached over a broad dynamic range, with charge gains of [range-phrase = -]e4e6. Compared to the usual exponential ones, the observed Polya-like charge spectra pave the way towards higher single-electron detection efficiencies. The latter was evaluated here, using experimental data combined with numerical simulations. The effects of the gas mixtures, electric field configuration, and detector geometry on the Polya spectra and their related “θ” parameter are presented.

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THGEM-based photon detectors for the upgrade of COMPASS RICH-1

Cited by 27 publications

References 54 publications

In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector

In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector

Status and progress of novel photon detectors based on THGEM and hybrid MPGD architectures

Single-electron spectra in RPWELL-based detectors

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