Abstract
A small TPC has been read out by means of a Medipix2 chip as direct anode. A Micromegas foil was placed Click to view the MathML source above the chip, and electron multiplication occurred in the gap. With a He/isobutane 80/20 mixture, gas multiplication factors up to tens of thousands were achieved, resulting in an efficiency for detecting single electrons of better than 90%. With this new readout technology for gas-filled detectors we recorded many image frames containing 2D images with tracks from cosmic muons. Along these tracks, electron clusters were observed, as well as ?-rays. With a gas layer thickness of only 1 mm, the device could be applied as vertex detector, outperforming all Si-based detectors.
| Original language | English |
|---|---|
| Pages (from-to) | 1503-1507 |
| Number of pages | 5 |
| Journal | Microelectronics reliability |
| Volume | 44 |
| Issue number | 9-11 |
| DOIs | |
| Publication status | Published - 4 Oct 2004 |
| Event | 15th European Symposium on Reliability of Electron Devices, Failure Physics and Analysis, ESREF 2004 - Zurich, Switzerland Duration: 4 Oct 2004 → 8 Oct 2004 Conference number: 15 |
Keywords
- EWI-15531
- METIS-220200
- Integrated circuits
- Contact line
- Circuit design
- Complementary MOS technology
- IR-67728
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