Author/Authors :
Bernlِhr، نويسنده , , K. and Gamp، نويسنده , , P. S. P. Hermann، نويسنده , , G. O. Hofmann، نويسنده , , W. and Kihm، نويسنده , , T. and Knِppler، نويسنده , , J. and Leffers، نويسنده , , G. and Matheis، نويسنده , , V. and Panter، نويسنده , , M. and Trunk، نويسنده , , U. and Ulrich، نويسنده , , M. and Wolf، نويسنده , , T. and Zink، نويسنده , , R. and Heintze، نويسنده , , J. and Lennert، نويسنده , , P. and Polenz، نويسنده , , Sana S. and Eckmann، نويسنده , , R.، نويسنده ,
Abstract :
The Cosmic Ray Tracking (CRT) project represents a study on the use of tracking detectors of the time projection chamber type to detect secondary cosmic ray particles in extensive air showers. In reconstructing the arrival direction of the primary cosmic ray particles, the CRT detectors take advantage of the angular correlation of secondary particles with the cosmic rays leading to these air showers.
s paper, the detector hardware including the custom-designed electronics system is described in detail. A CRT detector module provides an active area of 2.5 m2 and allows to measure track directions with a precision of 0.4°. It consists of two circular drift chambers of 1.8 m diameter with six sense wires each, and a 10cm thick iron plate between the two chambers. Each detector has a local electronics box with a readout, trigger, and monitoring system.
tectors can distinguish penetrating muons from other types of charged secondaries. A large detector array could be used to search for γ-ray point sources at energies above several TeV and for studies of the cosmic-ray composition. Ten detectors are in operation at the site of the HEGRA air shower array.
