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OLAV 1

11–12 Apr 2005
CERN
Europe/Zurich timezone

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Session

SESSION 3

not assigned
12 Apr 2005, 08:30
40-SS-D01 (CERN)

40-SS-D01

CERN

Geneva, Switzerland

Description

Vacuum Failures / Recovery Procedure

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  1. 25. Vacuum System Failures at HERA
    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.
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  2. 7. CESR Vacuum System Monitoring and Component Quality Assurance
    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...
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  3. 21. The Recent Cyclotron Vacuum System Problems.
    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...
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  4. 30. RGA’s are Great ……if you Know What you are Looking For!
    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,...
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  5. 3. The ESRF preventive maintenance program
    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...
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  6. 32. Vacuum faults at Elettra
    Dr Fabio Mazzolini (SincrotroneTriesteS.C.p.A.)
    12/04/2005, 09:45
    SESSION3
    A description of some vacuum faults in Elettra
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