The germanium wall of the GEM detector system

M. Betigeri, E. Białkowski, H. Bojowald, A. Budzanowski, A. Chatterjee, M. Drochner, J. Ernst, S. Förtsch, L. Freindl, D. Frekers, W. Garske, K. Grewer, A. Hamacher, S. Igel, J. Ilieva, L. Jarczyk, M. Jochmann, G. Kemmerling, K. Kilian, S. KliczewskiW. Klimala, D. Kolev, T. Kutsarova, J. Lieb, G. Lippert, H. Machner, A. Magiera, H. Nann, L. Pentchev, H. S. Plendl, D. Protic̀, B. Razen, P. Von Rossen, B. J. Roy, R. Siudak, J. Smyrski, R. V. Srikantiah, A. Strzałkowski, R. Tsenov, P. A. Zołnierczuk, K. Zwoll

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36 Scopus citations

Abstract

A stack of annular detectors made of high-purity germanium was developed. The detectors are position sensitive with radial structures. The first one ("Quirl") is double-sided position sensitive defining 40 000 pixels, the following three (E1, E2 and E3) have 32 wedges each. The Quirl acts as tracker while the other three act as calorimeter. The stack was successfully operated in meson production reactions close to threshold.

Original languageEnglish
Pages (from-to)447-457
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume421
Issue number3
DOIs
StatePublished - Feb 1 1999
Externally publishedYes

Funding

We are grateful to G. Riepe for his collaboration in an early phase of the project. Further thanks go to the Institut für Schichten und Ionen, Forschungszentrum Jülich for supplying masks used to make the photolithography. We are thankful for the support by BMBF Germany (06 MS 568 I TP4), Internationales Büro des BMBF (X081.24 and 211.6), SCSR Poland (2P302 025 and 2P03B 88 08),NSF Bulgaria (414), and COSY Jülich.

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