Paper |
Title |
Other Keywords |
Page |
IT04 |
Fast Positional Global Feedback for Storage Rings
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feedback, closed-orbit, dipole, damping |
7 |
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PS20 |
A current digitizer for ionisation chambers/SEMS with high resolution and fast resoponse
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ion, electron, pick-up, monitoring |
147 |
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- H. Reeg
GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany
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A current-to-frequency converter (CFC), recently
developed, exhibits a response time up to the ms region.
The frequency limit is raised beyond 1 MHz, extending
the linear range by a factor of 100. The conversion
factor reaches 10-13 C/pulse. The converter is
employed, combined with ionization chambers (IC) and
secondary electron emission monitors (SEM), to
measure the intensity of the extracted beam in the
transfer lines adjoining GSI's heavy ion synchrotron
(SIS). Fast intensity fluctuations during the particle
spill can be observed.
Reduced hum and noise pickup, better handling and
mounting flexibility as well as reduced costs are
achieved building up the spill monitoring system with
distributed components.
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