Detection of single photons with THickGEM-based counters

Alexeev, M.; Barbosa, Fernando; Birsa, R.; Bradamante, F.; Chiosso, M.; Ciliberti, P.; Torre, S. Dalla; Duic, V.; Ferrero, A.; Finger, M.; Fischer, H.; Giorgi, M. A.; Gobbo, B.; Gregori, M.; Heinsius, F. H.; Herrmann, F.; Königsmann, K.; Kramer, Daniel; Lauser, L.; Levorato, S.; Maggiora, A.; Martin, A.; Menon, G.; Nováková, Kateřina; Nový, J.; Panzieri, D.; Pesaro, G.; Polák, Jaroslav; Rocco, E.; Santos, C.; Sbrizzai, G.; Schiavon, P.; Schill, C.; Schopferer, S.; Slunečka, M.; Sozzi, F.; Steiger, L.; Šulc, M.; Takekawa, S.; Tessarotto, F.; Veloso, J.F.C.A.; Wollny, H.

doi:10.1016/j.nima.2011.11.079

Cited by 25 publications

(2 citation statements)

References 10 publications

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“…The advantages of GPM are easy to build big area, cheap and suitable for UV&VUV lights. The high gain, up to 1.0× 10 5 , is expected for GPM in order to reach single photon detection level [21]. The space resolution is not a limitation in this case.…”

Section: Gaseous Photomultipliers (Gpm)mentioning

confidence: 94%

Study of new substrate THGEMs with low neutron scattering and low radioactivity

Zhang¹,

Xie²,

Yan³

et al. 2015

J. Inst.

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New types of Thick Gaseous Electron Multipliers (THGEMs) made of PCB-type substrates, including Ceramic, Kapton, PTFE, and in addition to FR-4, were developed for applications requiring low neutron absorption, scattering, and low natural radioactivity, such as the THGEM-based neutron detector, and the THGEM-based gaseous multiplier (GPM). Using Geant4 simulation, the result of the total neutron absorption and scattering ratio of bare substrate is Kapton(high) > FR-4 > Ceramic > PTFE (low). The Ceramic and PTFE substrates have lower ratios about 0.707% and 0.635% per layer(0.2 mm thick) respectively. The gamma-induced electron background is the reverse, Ceramic > PTFE > FR-4 > Kapton, from 1.5% to 0.7% at 1.0 MeV, which induces highest electron background in the range of 0∼7 MeV. The natural radioactivity background was measured for these types of substrate samples. The Ceramic substrate has lower radioactivity, 232 Th = 8.8 ± 0.9 Bq/kg, 238 U = 6.3 ± 0.9 Bq/kg, and 40 K is too low to be detected. Some THGEM samples were produced by these four types of substrates in the same shape: 0.2-mm thickness, 0.2-mm hole diameter, 0.6-mm pitch, and 70-µm rim. The performances of these new substrate THGEMs are promising. The effective gain is at the 10 4 level and the gain was stable during more than 100 hours continuous test. The energy resolution @ Ar+IsoB = 97:3 is at the level of 20% to 27%. These new substrate THGEMs are available in 200×200 mm 2 size and even larger, some of them are applied to neutron flux monitor detector and gaseous photomultipliers (GPM).

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Section: Gaseous Photomultipliers (Gpm)mentioning

confidence: 94%

Study of new substrate THGEMs with low neutron scattering and low radioactivity

Zhang¹,

Xie²,

Yan³

et al. 2015

J. Inst.

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“…THGEM multipliers are suitable for a variety of applications that do not require high spatial resolution. Current examples are CsI-coated cascaded-THGEM UV-photon detectors [10] for Ring-Imaging Cherenkov (RICH) detectors, replacing advantageously wire-chambers [11][12][13][14][15]; cryogenic gaseous photomultipliers for recording scintillation-light in noble-liquid detectors, developed for future dark-matter experiments, medical imaging cameras [16][17][18][19][20] and in combined neutron/gamma inspection systems [21]; fast-neutron detectors with dedicated converter-foils [22,23] and thin THGEM-based sampling elements, developed mainly for digital hadronic calorimeters (DHCAL), in view of their potential deployment in high-energy physics experiments in future linear colliders [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Recent advances with THGEM detectors

et al. 2013

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The Thick Gaseous Electron Multiplier (THGEM) is a simple and robust electrode suitable for large area detectors. In this work the results of extensive comparative studies of the physical properties of different THGEM-based structures are reviewed. The focus is on newly suggested THGEM-like WELL configurations as well as on recently developed characterization methods. The WELL structures are single-sided THGEM electrodes directly coupled to different anode readout electrodes. The structures differ by the coupling concept of the bottom THGEM electrode to the metallic readout pads: a Thick WELL (THWELL) with direct coupling; the Resistive WELL (RWELL) and the Segmented Resistive WELL (SRWELL) coupled through thin resistive films deposited on insulating sheets and a Resistive-Plate WELL (RPWELL) coupled through a plate of high bulk resistivity. The results are compared to that of traditional double-sided THGEM electrodes followed by induction gaps -in some cases with moderate additional multiplication within the gap. We compare the different configurations in terms of gain, avalanche extension, discharge-rate and magnitude as well as rate capabilities over a broad dynamic range -exploiting a method that mimics highly ionizing particles in the laboratory. We report on recent studies of avalanche distribution in THGEM holes using optical readout.

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

Alexeev

Azevedo

Birsa

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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New Cherenkov photon detectors are being developed for the upgrade of COMPASS RICH-1. The detectors are based on THGEMs, arranged in a three layer architecture, with a CsI ﬁlm on the ﬁrst layer acting as a reﬂective photocathode. The response of THGEMs with various geometries under different conditions has been studied and photon detector prototypes have been built, tested in laboratory and operated during test beam runs providing a typical gain of 105 and a time resolution of better than 10 ns. A photon detector prototype with 300 x 300 mm2 active area, operated at the CERN PS T10 test beam in November 2012, has conﬁrmed the validity of this novel technology and has allowed further studies of the detector response

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Detection of single photons with THickGEM-based counters

Cited by 25 publications

References 10 publications

Study of new substrate THGEMs with low neutron scattering and low radioactivity

Study of new substrate THGEMs with low neutron scattering and low radioactivity

Recent advances with THGEM detectors

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

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