Abstract
As online trigger for events containing Λ hyperons in p+p collisions at 3.1 GeV a silicon-based device has been designed and built. This system has been integrated close to the target region within the FOPI spectrometer at GSI and was also employed as a tracking device to improve the vertex reconstruction of secondary decays. The design of the detector components, read-out, the trigger capability as well as the tracking performance are presented. An enrichment factor of about 14 was achieved for events containing a Λ-hyperon candidate.
| Original language | English |
|---|---|
| Pages (from-to) | 38-49 |
| Number of pages | 12 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 745 |
| DOIs | |
| State | Published - 1 May 2014 |
| Externally published | Yes |
Keywords
- APV25
- MIPS
- Mesytec
- Silicon
- Trigger
- Λ
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