Development of Large Area GEM Chambers

Yu, J.; Baldelomar, E.; Park, K.; Park, S.; Sosebee, M.; Tran, N. V.; White, A.

doi:10.48550/arxiv.1110.4327

Cited by 2 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This level of multiplicity is similar to that obtained with MICROMEGAS-based active elements (1.1 [4]) and lower than that observed for RPCs (∼1.5-2 [3]). Similar multiplicity values are foreseen for GEMbased active elements [5]. The 96% efficiency obtained with a single-THGEM with discrete readout is close to that obtained with MICROMEGAS (98% [4]) and somewhat larger than that of RPCs (∼92% [3]), where the MICROMEGAS and RPC efficiencies correspond to the multiplicities given above.…”

Section: Jinst 7 C05011supporting

confidence: 82%

See 1 more Smart Citation

THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation

Arazi¹,

Luz²,

Freytag³

et al. 2012

J. Inst.

View full text Add to dashboard Cite

We report on the results of an extensive R&D program aimed at the evaluation of Thick-Gas Electron Multipliers (THGEM) as potential active elements for Digital Hadron Calorimetry (DHCAL). Results are presented on efficiency, pad multiplicity and discharge probability of a 10x10 cm 2 prototype detector with 1 cm 2 readout pads. The detector is comprised of single-or double-THGEM multipliers coupled to the pad electrode either directly or via a resistive anode. Investigations employing standard discrete electronics and the KPiX readout system have been carried out both under laboratory conditions and with muons and pions at the CERN RD51 test beam. For detectors having a charge-induction gap, it has been shown that even a ~6 mm thick single-THGEM detector reached detection efficiencies above 95%, with pad-hit multiplicity of 1.1-1.2 per event; discharge probabilities were of the order of 10 -6 -10 -5 sparks/trigger, depending on the detector structure and gain. Preliminary beam tests with a WELL hole-structure, closed by a resistive anode, yielded discharge probabilities of <2x10 -6 for an efficiency of ~95%. Methods are presented to reduce charge-spread and pad multiplicity with resistive anodes. The new method showed good prospects for further evaluation of very thin THGEM-based detectors as potential active elements for DHCAL, with competitive performances, simplicity and robustness. Further developments are in course.

show abstract

Section: Jinst 7 C05011supporting

confidence: 82%

“…Detection elements based on the MICRO MEsh Gaseous Structure (MICROMEGAS), have demonstrated 98% efficiency with a 1.1 average multiplicity [4]. Elements based on double Gaseous Electron Multipliers (double-GEM), have shown a multiplicity of ∼1.3 at 95% efficiency [5].…”

mentioning

confidence: 99%

THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation

Arazi¹,

Luz²,

Freytag³

et al. 2012

J. Inst.

View full text Add to dashboard Cite

show abstract

“…RPCs presently constitute the baseline technology for the SiD DHCAL, with 94% efficiency and pad multiplicity of 1.6 [10]; other solutions have been investigated, e.g. MI-CROMEGAS with 98% efficiency and multiplicity of 1.1 [11] and Double-GEMs, with 95% efficiency and pad multiplicity of 1.3 [12] (all results are for muons).…”

Section: Introductionmentioning

confidence: 99%

Beam studies of the segmented resistive WELL: A potential thin sampling element for digital hadron calorimetry

Arazi

Azevedo²,

Breskin

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Thick Gas Electron Multipliers (THGEMs) have the potential of constituting thin, robust sampling elements in Digital Hadron Calorimetry (DHCAL) in future colliders. We report on recent beam studies of new single-and double-THGEM-like structures; the multiplier is a Segmented Resistive WELL (SRWELL) -a single-faced THGEM in contact with a segmented resistive layer inductively coupled to readout pads. Several 10×10 cm 2 configurations with a total thickness of 5-6 mm (excluding electronics) with 1 cm 2 pads coupled to APV-SRS readout were investigated with muons and pions. Detection efficiencies in the 98% range were recorded with average pad-multiplicity of ∼1.1. The resistive anode resulted in efficient discharge damping, with potential drops of a few volts; discharge probabilities were ∼10 −7 for muons and ∼10 −6 for pions in the double-stage configuration, at rates of a few kHz/cm 2 . Further optimization work and research on larger detectors are underway.

show abstract

Development of Large Area GEM Chambers

Cited by 2 publications

References 4 publications

THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation

THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation

Beam studies of the segmented resistive WELL: A potential thin sampling element for digital hadron calorimetry

Contact Info

Product

Resources

About