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Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 71: Myondetektoren 1

T 71.2: Talk

Monday, March 4, 2013, 11:15–11:30, GER-039

Discharge Behaviour of MicroMegas Detectors — •Samuel Moll, Jonathan Bortfeld, Ralf Hertenberger, Philipp Loesel, and Otmar Biebel — Ludwigs-Maximilians-Universitaet, Munich, Germany

The discharge behaviour of MicroMegas detectors with conventional copper strip anode has been investigated. Alpha particles from a mixed nuclide source produce high enough primary ionization that the charge density during gas amplification exceeds the Raether limit. The detector has been adapted such that the pass length of the alphas inside the detector can be varied. The discharges were counted using a discriminator and NIM scaler capacitively coupled to the mesh. We report on the dependence on drift and amplification voltage for a range of operating temperatures and compare with Garfield++ simulations.

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