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

Author

Novotny, Rainer Willi ; Doring, Werner ; Dormenev, Valera ; Drexler, Peter ; Erni, Werner ; Rost, Matthias ; Steinacher, Michael ; Thiel, Michaela ; Thomas, Andreas

Author_Institution

Phys. Inst., Univ. Giessen, Giessen

Volume

55

Issue

3

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1295

Lastpage

1298

Abstract

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.

Keywords

avalanche photodiodes; lead compounds; particle calorimetry; solid scintillation detectors; EMC; PANDA detector; PWO-II prototype arrays; PbWO₄; avalanche photodiode; electromagnetic calorimeter; electromagnetic shower distributions; electron volt energy 675 MeV; temperature 0 C; Detectors; Diodes; Electromagnetic compatibility; Electromagnetic measurements; Energy measurement; Energy resolution; Photonic crystals; Prototypes; Spectroscopy; Temperature; Calorimetry; detectors; radiation detectors; scintillation detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2008.922807

Filename

4545189