GEMs with Double Layred Micropattern Electrodes and their Applications

Abstract

We have developed and tested several new designs of GEM detectors with micropattern electrodes manufactured by microelectronic technology. In one design, the inner layer of the detector electrode consists of thin metallic strips and the outer layer is made of a resistive grid manufactured by a screen printing technology. In other designs, the electrodes were made of metallic strips fed by HV via micro-resistors manufactured by a screen printing technology. Due to these features, the new detectors have several important advantages over conventional GEMs or ordinary thick GEMs. For example, the resistive grid (in the first design) and the screen printed resistors (in other designs) limited the current in case of discharges, making these detectors intrinsically spark-protected. We will here describe our tests with the photosensitive versions of these detectors (coated with CsI layers) and the efforts of implementing them in several applications. In particular, we will focus on our activity towards the ALICE RICH detector upgrade and on tests of simplified prototypes of cryogenic dark matter detectors.

Presented at the IEEE Nucler Science Symposium, Dresden, 2008

References in corpus (14)

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• Detection of the primary scintillation light from dense Ar, Kr and Xe with novel photosensitive gaseous detectors
• A Hadron Blind Detector for the PHENIX Experiment at RHIC
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• Photosensitive Gaseous Detectors for Cryogenic Temperature Applications
• Photosensitive Strip RETHGEM

Cited by in corpus (4)

• Progress in the development of a S RETGEM-based detector for an early forest fire warning system
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Advances in Micro-Pattern Gaseous Detectors and their Applications
• Development and preliminary tests of resistive microdot and microstrip detectors