Development of GEM based digital hadron calorimeter

Yu, J.; Brown, H.; Han, Chang Hie; Hong, Kwon Pyo; Kim, Sang-Nyeon; Kim, Wonjeong; Li, Jia; Medina, Carlos; Park, Seong Tae; Smith, Jacob; White, A.

doi:10.1109/nssmic.2008.4774703

Cited by 5 publications

(1 citation statement)

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“…The large area prototype generated a lot of interest in large area GEMs. Applications range from forward tracking and triggering in sLHC experiments, to barrel tracking with cylindrical GEMs [7], digital hadronic calorimetry for ILC experiments [8], cosmic muon tomography for detection of high Z materials [9], time projection chamber readout [10], and various tracking detectors for nuclear physics experiments. In the fabrication of ever larger area GEMs, handling is a growing concern.…”

Section: Jinst 4 P14 Productionmentioning

confidence: 99%

Progress on large area GEMs

et al. 2009

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In 2008, a triple GEM detector prototype with an area of ∼ 2000 cm 2 has been constructed, based on foils of 66 × 66 cm. GEMs of such dimensions had not been made before, and innovations to the existing technology were introduced to build this detector. This paper discusses these innovations and presents further work on large area GEM development.A single-mask technique overcomes the cumbersome practice of alignment of two masks, which limits the achievable lateral size. The holes obtained with this technique are conical, and have a so-called rim, a small insulating clearance around the hole in the substrate. Further refinements of this technique allow greater control over the shape of holes and the size of rims. Also, an improvement in homogeneity over large areas is expected.Simulation studies have been done to examine the effect of hole shape on the behavior of GEMs. Such studies can help understanding how to use new enhancements of the technique to optimize performance. Many potential applications for large area GEMs foresee large production volumes. Production issues have been studied, and single-mask GEMs turn out to be much more suitable for large scale production than standard GEMs.

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Section: Jinst 4 P14 Productionmentioning

confidence: 99%