Paper |
Title |
Other Keywords |
Page |
PS17 |
Beam Profile Detectors at the new fermilab injector and associated beamlines
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proton, instrumentation, target, controls |
141 |
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- G. Tassotto, J. Zagel
FNAL, Fermi National Accelerator Laboratory, Batavia, IL, USA
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Transition radiation (TR) is nowadays intensively exploited
by a number of techniques to characterize different beam
parameters. These methods are based, sometimes implicitly,
on standard formulae, and used often without paying
due attention to their applicability. In particular, standard
expressions are only first-order asymptotic, i.e., strictly
speaking, valid at infinity. In this paper TR is examined in a
spatial domain where conventional results are no more exact
and variations in radiation properties are observed. Under
certain conditions, for example, at long wavelengths or
very high energies the effect is so considerable that should
be taken into account in accurate beam measurements.
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PT06 |
New digital BPM system for the Swiss light source
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feedback, storage-ring, closed-orbit, alignment |
168 |
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- M. Dehler, A. Jaggi, P. Pollet, T. Schilcher, V. Schlott, R. Uršič, R. deMonte
PSI, Paul Scherrer Institut, Villigen, Switzerland
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This paper presents a new digital beam position monitor
(DBPM) system which is currently under development
for the Swiss Light Source (SLS). It is designed to
provide sub-micron position data in normal closed orbit,
and feedback mode as well as turn by turn information
for machine studies and real time tune measurements.
The self calibrating four channel system consists of a RF
front end, a digital receiver and a DSP module. The same
electronics will be used in all sections of the SLS accelerator
complex. The system can be reconfigured in real
time to perform different kind of measurements like:
pulsed for linac and transfer lines, first turn, turn-by-turn,
closed orbit, feedback and even tune mode for booster
and storage ring. These reconfigurations only involve
downloading of new signal processing software and will
be performed via EPICS control system. An independent
system for monitoring mechanical drifts of the BPM stations
will be installed as well. The measured data will be
permanently updated in a database and taken into account,
when processing the final electron beam positions.
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