Description
Vacuum Failures / Recovery Procedure
Dr
Mike Seidel
(DESY)
12/04/2005, 08:30
SESSION3
HERA is a large electron proton collider that operates since 2000 with
upgraded interaction regions. We present several severe failure scenarios
which resulted from heating by mis-steered synchrotron radiation fans,
accidental losses of the proton beam or simply component failure.
Dr
Yulin Li
(Laboratory for Elementary-Particel Physics, Cornell University)
12/04/2005, 08:45
SESSION3
Cornell Electron Storage Ring supports three science programs, the CLEO High Energy
Physics Experiments, the Cornell High Energy Synchrotron Sources and the Accelerator
Physics and R&D. The reliability of the CESR vacuum system is essential to the
success of these science programs. A network of 70+ cold cathode ion gauges, RGAs
and over thousand of thermal couples monitor the...
Dr
Igor Sekachev
(TRIUMF, Canadian National Laboratory)
12/04/2005, 09:00
SESSION3
The cyclotron at TRIUMF was built in 1972 and commissioned to full energy in 1974.
The cyclotron vacuum tank is very complex with a total of 208 ports and a main double
seal 17 meters in diameter. The volume of the tank is about 100 m3 and operates at
2*10-8 Torr. The vacuum is achieved by cryopumping with internal cryopanels cooled by
a Philips B-20 cryogenerator and six cryopumps. A...
Dr
Peter Ladd
(ORNL)
12/04/2005, 09:15
SESSION3
An operational experience to be shared that followed fine tuning of the RF
performance of the drift tube linac after initial tank conditioning. The
conditioning power level of 2.2 MW that was achieved during initial
conditioning could not be obtained following further mechanical tuning of the
RF system. The initial suspect was vacuum, specifically pressure spikes in the
window area,...
Mr
Michael Hahn
(ACTING HEAD OF ESRF VACUUM GROUP)
12/04/2005, 09:30
SESSION3
The ESRF Vacuum Group uses a number of analysis tools to identify vacuum failures or
irregularities by systematic study of not only total and partial pressure data but
also by looking into relation with machine data of the Storage ring such as beam
emittance, gap opening of Insertion Devices, temperatures, Bremsstrahlung and many
more. The storage of all these values in a common...
Dr
Fabio Mazzolini
(SincrotroneTriesteS.C.p.A.)
12/04/2005, 09:45
SESSION3
A description of some vacuum faults in Elettra
