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A high resolution Timing Counter for the MEG II experiment.
- Source :
-
Nuclear Instruments & Methods in Physics Research Section A . Jul2016, Vol. 824, p92-95. 4p. - Publication Year :
- 2016
-
Abstract
- The development of a Timing Counter detector designed for the MEGII upgrade of the MEG experiment, which strives to improve the sensitivity on the μ + → e + γ decay of an order of magnitude, is presented. It is based on two sets of counters (sectors) arranged on a semi-cylindrical structure; each sector consists of 256 counters. Each counter consists of tile of fast scintillator with a dual-side read-out based on SiPM arrays in series connection. The high granularity has two advantages: optimized size for achieving high resolution (75 ps) for the single counter, and a signal e + crosses several counters, so that resolution improves by averaging multiple time measurements. A prototype has been built and tested both in BTF and PSI facilities in order to prove the multi-hit scheme in MEG-like beam conditions. A 35 ps resolution with eight hits has been obtained with a e + beam at 100 kHz. The first sector will be tested in the MEG II pre-engineering run planned at the end of 2015. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01689002
- Volume :
- 824
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section A
- Publication Type :
- Academic Journal
- Accession number :
- 115213653
- Full Text :
- https://doi.org/10.1016/j.nima.2015.11.022