Dresden 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
TT: Tiefe Temperaturen
TT 24: Superconductivity: Cryodetectors
TT 24.7: Vortrag
Mittwoch, 29. März 2006, 18:15–18:30, HSZ 02
Development of an array of calorimetric low temperature detectors for heavy ion physics — •S. Ilieva1,2, A. Bleile1,2, P. Egelhof1,2, A. Kiseleva1, O. Kiselev1, S. Kraft-Bermuth1,2, and J. P. Meier1,2 — 1Gesellschaft für Schwerionenforschung, Darmstadt, Germany — 2Institut für Physik, Johannes Gutenberg Universität, Mainz, Germany
Calorimetric low temperature detectors (CLTDs) for heavy ion detection have been frequently demonstrated to achieve an excellent relative energy resolution of ΔE/E = 1–5 x 10−3 in a wide range of ions and energies (E = 0.1–360 MeV/u). The application of a CLTD in accelerator mass spectrometry achieved an improvement in sensitivity by one order of magnitude. In superheavy element research, CLTDs as high-resolution energy detectors combined with time-of-flight detectors may potentially be used for identification of superheavy nuclei with Z≥113. The CLTDs developed up to now have an active area of approximately 2x3 mm2, not sufficient to fully exploit their potential. To increase the active area, an array of CLTDs for heavy ion research is currently subject of design and investigation of performance. The array is designed to provide an active area of 30 x 80 mm2, consisting of about 100 pixels. For this purpose, a special windowless 4He bath cryostat with large cooling power has been constructed and adapted to the needs of heavy ion research. As a first step, a 2 x 2 pixel prototype array with four individually temperature-regulated pixels and a total area of 6 x 6 mm2 is realized and its performance under heavy ion irradiation is investigated. First results of these investigations and perspectives will be discussed.