Viewing Screens and Residual Gas Monitor

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Abstract:
 
Two different systems are currently under development at GSI's heavy ion facility to measure transverse beam profiles using optical emitters.
At the GSI-LINAC for energies up to 20 MeV/u residual gas fluorescence is investigated for pulsed high current N2 emitting light in the blue and near UV. This is monitored by an image intensified CCD camera and the sensitivity is proven to be sufficient. The detector system will be used as a compact alternative to a residual gas monitor.
For all ion species with energies above 50 MeV/u slowly extracted from the synchrotron SIS a classical viewing screen system is used. Three different target materials have been investigated and their behavior concerning sensitivity, saturation and timing performance is evaluated. The aim of these measurements is to study movements of the beam during expensive methods like MWPCs.
Both systems use CCD cameras with a digital readout using the IEEE 1394 standard. First measurements will be described and the methods and results of the digital image processing will be presented.
 
Author(s):    A. Bank, P. Forck, A. Peters, A. Weiss
Contact:       P.Forck
Paper:          Download