CLIC Beam Physics Meeting

Europe/Zurich
6/2-004 (CERN)

6/2-004

CERN

40
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Participants: B. Dalena, J. Pfingstner, L. Rinolfi, D. Schulte, J. Snuverink, G. Sterbini, F. Stulle, R. Tomas, A. Vivoli, Guillermo Zamudio B.D. reported on studies of the tolerances on magnetic field jitter of the detector solenoid. Several setups tolerate a few 1e-5 relative jitter. Only if the AntiDiD is use the tolerance is just 1e-6. According to D.S. these specs look quite promising. He asked what would change if the bunches enetr the solenoid field off-center. B.D. will study this. F.S. showed a slice on the tolerances of magnetic field jitter in the DB turn around loops. In case all magnets would jitter individually the tolerance is 1e-5. If all dipoles are powered by a single power supply the tolerance increases to 1e-4. G.Z. discussed the issue of fitting the 500 GeV BDS into the same tunnel as the 3 TeV BDS, i.e. pointing the upstream end of the 500 GeV BDS correctly into the tunnel. A first layout which is not yet fully optimized results in lower luminosity. Further studies are required but it could be beneficial if the crossing angle could be slightly changed. D.S. said this might be an option as long as the change is really small. D.S. presented a list of topics he wants to discuss during the CLIC Base Line Meeting. He asked if the list is complete or if we see other important changes to the baseline design. He would need a list of commissioning dumps all along CLIC. L.R. pointed out that it was discussed to use 1 GHz cavities for the MB injector complex which would require a bunch combination scheme behind the damping rings.
There are minutes attached to this event. Show them.
    • 16:00 16:20
      Tolerances on the magnetic field stability in the detector solenoid 20m
      Speaker: Barbara Dalena (CERN)
      Slides
    • 16:20 16:40
      Tolerances on magnetic field jitter in the DB turn around loops 20m
      Speaker: Dr Frank Stulle (CERN)
      Slides
    • 16:40 17:00
      BDS layout options for 500 GeV 20m
      Speaker: Guillermo Zamudio Ascencio (Lulea University of Technology)
      Slides
    • 17:00 17:20
      Preparation of the CLIC Base Line Meeting 2009-12-11 20m
      Speaker: Daniel Schulte (CERN)
      Slides