Published February 1989 | Version v1
Report Restricted

TOPAS 2 - a high-resolution tagging system at the Bonn SAPHIR detector

Description

For the SAPHIR-arrangement in Bonn a high resolving tagging system has been developed achieving an energy resolution of 2 MeV, covering the range of (0.94-0.34) E0 photon energy (1.0 GeV < E0 < 3.5 GeV). The system consists of 14 scintillation counters for accurate timing and two MWPC with 700 wires. Preparing measurements with a similar device were made testing gases as ArCO2, ArCH4 and ArC2H6 in concern of performance, clustersize and coincidence width. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Additional titles

Original title (German)
TOPAS 2 - ein hochaufloesendes Taggingsystem am Bonner SAPHIR-Detektor

Publishing Information

Imprint Pagination
53 p.
Report number
BONN-IR--89-04