Performance of PWO-II Prototype Arrays for the EMC of PANDA

Performance of PWO-II Prototype Arrays for the EMC of PANDA

The response function of a 3 times 3 matrix of 200-mm-long PWO-II crystals has been measured with energy-marked photons up to 675 MeV energy. For the first time the crystals were readout individually with one large area avalanche photo diode of the second generation operating at a temperature of 0de...

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Veröffentlicht in:IEEE transactions on nuclear science 2008-06, Vol.55 (3), p.1295-1298
Hauptverfasser: Novotny, R.W., Doring, W., Dormenev, V., Drexler, P., Erni, W., Rost, M., Steinacher, M., Thiel, M., Thomas, A.
Format: Artikel
Sprache:eng
Schlagworte:
Arrays
Avalanche diodes
Calorimetry
Collection
Crystals
Detectors
Diodes
Electromagnetic compatibility
Electromagnetic measurements
Energy (nuclear)
Energy measurement
Energy resolution
Photonic crystals
Photons
Prototypes
radiation detectors
Response functions
scintillation detectors
Spectroscopy
Temperature
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Beschreibung
Zusammenfassung:The response function of a 3 times 3 matrix of 200-mm-long PWO-II crystals has been measured with energy-marked photons up to 675 MeV energy. For the first time the crystals were readout individually with one large area avalanche photo diode of the second generation operating at a temperature of 0degC. The reconstructed electromagnetic shower distributions show excellent energy resolutions down to 40 MeV. Reducing the temperature and increasing the light collection by an additional large-area avalanche photo diode can achieve further improvement.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2008.922807