CERN Accelerating science

European Organization for Nuclear Research

Resistive MicroMegas

Description

This technology is an interface between a detector vessel and a readout structure for an avalanche particle detector, in particular for a MicroPattern Gas Detector (MPGD) such as the MicroMegas detector.
In this invention the various elements of the structure are optimized in such a way the electronic signal is not lost through the resistive layer but is propagated to a separate plane, carrying read-out pads or strips, by capacitive coupling. There is complete separation between the Micromegas detector and the readout electronic plane.
The technology:
• Reduces the charge released by Micromegas during spark formation. It provides spark protection to electronic.
• Easily accommodates any readout electronics by separating detector function and electronics function
• In the case of using integrated pixel chips this structure would solve a technical problem, related to the implementation of many chips, without creating dead space.

Areas of expertise

Microelectronics; High performance detectors.

Applications

The use of the ceramic structure could permit the fabrication of a seal detector which is a must for many industrial applications: industrial fluorescence, radiology, UV photodetector.

Advantages

  • Electronics protection
  • Seal detector
  • Compatibility with any readout system and especially with integrated micropixel systems
  • Good potential for interchangeable detectors/readout if built to a standard format

Limitations

Compared to the Bulk Micromegas technology, the disadvantage is that new technology will not compete for fabricating very-large detectors of the order of 1x1 m2.

Intellectual Property status

Patent application filed.

Related Publications

P. Colas et al., Nucl. Instr. and Meth. A 535 (2004) p.506
Bilevych et al., Nucl.Instrum.Meth. A629 (2011) 66-73
M. Campbell et al., Nucl.Instrum.Meth. A540 (2005) 295-304
 

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