Recent advances with THGEM detectors

S. Bressler, L. Arazi, L. Moleri, M. Pitt, A. Rubin, A. Breskin

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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; they differ by the coupling concept of the bottom THGEM electrode to the metallic readout pads. 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.

Original languageEnglish
Article numberC12012
JournalJournal of Instrumentation
Volume8
Issue number12
DOIs
StatePublished - 1 Dec 2013
Externally publishedYes

Keywords

  • Electron multipliers (gas)
  • Gaseous detectors
  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)

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