Darmstadt 2008 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 34: Postersitzung
HK 34.45: Poster
Thursday, March 13, 2008, 14:00–16:00, Poster C3
A Prototype Scintillating Fiber Detector for the HypHI Experiment — •Olga Lepyoshkina for the HypHI collaboration — TU München, Physik-Department E12.
One of the central parts of the HypHI experiment is a scintillating fiber detector, for the measurement of decay vertices of hypernuclei and for the tracking of charged particles right behind the target. The fiber detector is also a crucial part in the online tracking trigger distinguishing hypernuclei Λ 4H and Λ 3H from the background containing α-particles produced at the target. Before the real experiment a prototype of the scintillating fiber detector has been built. First tests of resolution, efficiency, fiber and photomultiplier crosstalk have been performed using cosmic rays and a 90Sr source. Realistic tests under experimental conditions have been done at the GSI-Darmstadt with a primary beam of carbon at 2 A GeV and a coctail beam including π+ with a momentum of 1 GeV/c. We will show the concept of the detector, the encouraging results of the test and even particle identification capabilities of the device.