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HK: Fachverband Hadronen und Kerne
HK 19: Accelerators and Instrumentation II
HK 19.6: Talk
Monday, March 16, 2009, 18:15–18:30, H-ZO 90
A Monolithic Detector Telescope Assembly with Multiplexed Electronic Readout — •Olof Tengblad1, Miguel Madurga Flores1, Mariano Carmona Gallardo1, and Göran Nyman2 — 1IEM-CSIC, Madrid, Spain — 2Chalmers Univ., Göteborg, Sweden
The study of excited states of unbound light nuclei includes the simultaneous detection of several charge particles emitted with very low energy. This puts sever constrains on the detection system to be used. For the detectors, high segmentation is needed to be able to detect several coincident particles, very thin dead layers to reduce the cut-of energy in combination with thin detectors to minimize sensitivity to beta and neutral particles.
For particle mass identification different techniques can be applied; Time of Flight, pulse shape analysis, or telescopes. At low energy heavy particles are easily stopped in the delta E, this makes the pulse shape technique very difficult to apply due to very weak signal and high noise level. A recent approach is using extremely thin DE detectors in monolithic assembly on a thick E detector both doped into the same wafer.
The high segmentation of the detectors leads to experiments with an increased amount of electronic channels. Optimized electronic and the use of multiplexing of the signals makes a high packing ratio possible while still keeping spectroscopy resolution. Detector and electronic developments made in parallel to experimental studies of multi particle break-up of excited states will be discussed.