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HK: Fachverband Hadronen und Kerne
HK 63: Accelerators and Instrumentation II
HK 63.5: Vortrag
Mittwoch, 18. März 2009, 18:00–18:15, H-ZO 90
Production of scintillation fiber combinations for the NEPTUN photon tagger * — •Cathrin Wälzlein1, Janis Endres2, Jan Glorius1, Norbert Pietralla1, Deniz Savran1, Linda Schnorrenberger1, Kerstin Sonnabend1, and Andreas Zilges2 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2Institut für Kernphysik, Universität zu Köln
At the S-DALINAC, the low-energy photon tagger NEPTUN has been constructed. An array of thin scintillation fibers is used to detect scattered electrons in the focal plane of the spectrometer. These fibers are connected to light guides to transmit the scintillation light to photomultiplier tubes. Connection methods were improved to reduce losses at the coupling areas. Additionally, the light yield is increased by using combinations of two scintillation fibers. A detection efficiency of nearly 100% is achieved. A report on the production process of the fibers and on their performance tests will be given.
* supported by the DFG (SFB 634)