Abstracts Brochure - CERN

TUPCH009
TUPCH010
TUPCH011
27-Jun-06 16:00 - 18:00 TUPCH — Poster Session
Beam Measurements and Manipulation of the Electron Beam in the BESSY-II Transferline
for Topping Up Studies
T. Kamps, D. Böhlick, V. Duerr, P. Kuske, J. Kuszynski, D. Lipka
(BESSY GmbH)
162
The BESSY-II storage ring based synchrotron
radiation source will be upgraded to allow
for continuous topping up operation. In order
to achieve a high injection efficiency be-
tween the booster synchrotron and the storage ring, the transferline will be equipped with novel beam size monitors
and collimators. This paper describes the collimator design and first beam measurements of the transverse emittance.
The transverse emittance is measured using the quadrupole scan technique. The data taking and the analysis
procedure is given together with results and comparision with simulations.
Profile Measurement by Beam Induced Fluorescence for 50 MeV/u to 500 MeV/u Heavy
Ion Beams
At the planned heavy ion facility FAIR very
P. Forck, F. Becker (GSI)
intense beams of heavy ions will be transported
between various synchrotrons and focused
on targets for secondary ion productions. For the transverse profile determination only non-destructive methods
are suited due to the large deposed beam power. We investigated experimentally the Beam Induced Fluorescence (BIF)
method. Due to the atomic collision by the beam ions the residual gas N2 is excited to fluorescence levels. Single
photon detection is performed by a double MCP image intensifier coupled to a digital CCD camera. Extensive
experimental studies (with the today available lower ion currents) were performed to determine the photon yield
and the background contribution for different ion species and beam energies. The measured profiles show a good
correspondence to other methods as long as the vacuum pressure by a regulated N2 inlet is below 10-1 mbar. Based
on the experimental results, the layout for a BIF profile determination will be discussed.
Innovative Beam Diagnostics for the Challenging FAIR Project
The planned FAIR facility consists of two
P. Forck, A. Peters (GSI)
heavy ion synchrotrons and four large storage
rings. The super-conducting synchrotrons
are build for high current operation and secondary ion production. A large variety of low current secondary
beams is stored and cooled in the four storage rings. A complex operation scheme with multiple use of transport
lines is foreseen. This demands an exceptional high dynamic range for the beam instrumentation. Due to the enormous
beam power, non-destructive methods are mandatory for high currents. For the low current secondary beams,
non-destructive diagnostics are also preferred due to the low repetition rate. Precise measurements of all beam
parameters and automatic steering or feedback capabilities are required due to the necessary exploitation of the full
ring acceptances. Moreover, online beam-corrections with short response times are mandatory for the fast ramping
super-conducting magnets. Due to the ultra-high vacuum condition and the demanding measurement accuracy,
novel technical solution are foreseen. An overview of the challenges and projected innovative solutions for various
diagnostic installations will be given.