Cosmic Ray Veto Counter

This page describes the veto counter to be used in conjunction with the large acceptance neutron counter at the University of Notre Dame. This sheild is necessary for experiments with low rates due to the relatively high rate of cosmic events in large scintillating material at sea level.

Updates

(06/29/10) First signal was acheived for the designs below and it looks fairly good!

scripts and PAW kumacs for plotting signals from digital O-scope [TAR.GZ]

(06/29/10) There has been a large amount of development work done in preparation for constructing a cosmic ray veto shield for the neutron wall. This was mentioned on the previous pages and below are some of the designs for long vertical paddles to serve as the scintillation detectors. The drawings are in .dxf format and were done with QCad, this format is portable to several other 2D drawing packages (see neutron wall page). I typically refer to the designs below as Generation 4 (G4) because they are double-step horse-shoe patterns for the WLS fibers (front and back, two side-by-side) with a tapered end down to an on-center 4-cluster in the endcap. Designs without the taper or with a simple single step horse shoe patter come from earlier generations.

various drawing templates [TAR.GZ]

long veto paddle, endcap, and connector [TAR.GZ]






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