A study of thinner-THGEM, with some applications

Liu, H B; Liu, Q; Chen, S; Ruan, Dong; Nicholson, C.; Xie, Y.; Zheng, Y.; Zheng, Z. P.; Lu, Jun‐Sheng; Li, Zhou; Tang, Ai-Song; Yang, Yadan; Dong, Yuxiang; Li, M

doi:10.1088/1748-0221/7/06/c06001

Cited by 16 publications

(11 citation statements)

References 7 publications

(12 reference statements)

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“…At the same operation voltage, the gain of the 0.4 mm thick THWELL and RWELL configurations was higher than that of the 0.4 mm thick double-sided configuration (operated with 2 mm induction gap and E induction = 0.5 kV/cm). This is due to the larger field strength in the closed holes [8]. A unique characteristic was observed with the RPWELL configuration with the highest bulk resistivity (here shown for a 0.8 mm RPWELL coupled to a VERTEC glass anode with a bulk resistivity of 8x10 12 Ωcm [31]: to the best of our knowledge, for the first time, the effect of considerable gain saturation was measured with a THGEM-based detector.…”

Section: Detector Gain Gain Saturation and Rate Dependencementioning

confidence: 57%

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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Section: Detector Gain Gain Saturation and Rate Dependencementioning

confidence: 57%

Recent advances with THGEM detectors

et al. 2013

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“…THGEMs are robust, low cost and easy to manufacture, with high gain (10 3 -10 5 ), good spatial resolution (sub-mm), high counting rate, and good stability. A special type of thinner-THGEM [4][5][6] was developed domestically in 2011.…”

Section: Introductionmentioning

confidence: 99%

Study of a sealed high gas pressure THGEM detector and response of alpha particle spectra

Zhang¹,

Liu²,

Liu³

et al. 2017

Chinese Phys. C

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Abstract:A sealed high gas pressure detector working in pure argon is assembled. It consists of a 5 cm × 5 cm PCB THGEM (THick Gaseous Electron Multipliers). The detector structure and experimental setup are described. The performances under high pressure of 2 atm mainly consist in selecting optimal voltages for ionization region and induction region. The dependence of the shape of Alpha particle spectra measured with relative gas gain on gas pressure (1.3 ∼ 2.0 atm) has been studied. The 8 groups of relative gas gain versus working voltage of THGEM expressed by weighting filed E/P are normalized, being consistent with theory. The results show that the air tightness of the chamber is good measured by a sensitive barometer and checked with gas gain. The experimental results are compared with Monte Carlo simulation on energy deposition without gas gain involved.

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“…Due to its good performance, the THGEM detector has many meaningful applications. It is not only used in X-ray diffraction [1] or X-ray imaging [2], but also as a cosmic-ray muon hodoscope [3] and as a UV-photon detector for RICH [4]. 1) E-mail: hongdj@ihep.ac.cn…”

Section: Introductionmentioning

confidence: 99%

p/π ⁺ response of single layer THGEM detector in Ar+3% iC ₄ H ₁₀

Hong

Liu

et al. 2015

Chinese Phys. C

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Abstract:In this work, we study the response of a single layer Thick Gaseous Electron Multiplier (THGEM) detector to p/π + at the E3 line of the Beijing Test Beam Facility. The THGEM detector drift gap used in this study is 4 mm, and the gain of the detector operated in Ar+3% iC 4 H 10 is about 2000. p/π + particles at momenta between 500 MeV/c and 1000 MeV/c are distinguished by a Time Of Flight (TOF) system. Results show that at the measured momenta, detection efficiencies for p are from 93% to 99%, and for π + in the range of 82%∼88%. Meanwhile, simple Geant4 simulations also have been done, and are consistent with the amplitude spectra of beam test results. We preliminarily study the feasibility of the THGEM detector as sampling element for a Digital Hadronic Calorimeter (DHCAL), which may provide support for a THGEM detector possibly being applied in the Circular Electron Positron Collider (CEPC) HCAL.

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A study of thinner-THGEM, with some applications

Cited by 16 publications

References 7 publications

Recent advances with THGEM detectors

Recent advances with THGEM detectors

Study of a sealed high gas pressure THGEM detector and response of alpha particle spectra

p/π ⁺ response of single layer THGEM detector in Ar+3% iC ₄ H ₁₀

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A study of thinner-THGEM, with some applications

Cited by 16 publications

References 7 publications

Recent advances with THGEM detectors

Recent advances with THGEM detectors

Study of a sealed high gas pressure THGEM detector and response of alpha particle spectra

p/π + response of single layer THGEM detector in Ar+3% iC 4 H 10

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p/π ⁺ response of single layer THGEM detector in Ar+3% iC ₄ H ₁₀