Dr
Ralph Wolfgang Assmann
(CERN)
14/06/2011, 09:30
Dr
Stefano Redaelli
(CERN)
14/06/2011, 09:35
Collimation system description: multi-stage cleaning, different planes, betatron and momentum. Definition of cleaning efficiency. Introduction quench limit. Hierarchy. Limiting physics processes: single-diffractive p scattering, ion fragmentation, ... Comments on hollow e-beam scrapers.
Daniel Wollmann
(CERN)
14/06/2011, 10:00
How is it adjusted? How does it perform in LHC (loss maps: measurement and simulation). MD results at 3.5TeV and performance reach at 7TeV. Losses in luminosity production (dispersion suppressors). Measurement protons vs ions. Minimum beam lifetime. First SPS results BPM’s in jaws.
Markus Brugger
(CERN)
14/06/2011, 10:50
Issues with radiation to electronics in LHC, with focus on collimation insertions. IR7 versus IR3 sensitivity. Benefit of moving losses from IR7 to IR3.
Roderik Bruce
(CERN)
14/06/2011, 11:10
Stability of LHC machine (orbit, beta). Required margins for collimation setup. Connection collimation to beta*. What beta* can be achieved? Origins of limitations: protection condition, infrequent collimation setups, machine drifts.
Mr
Anton Lechner
(Atomic Institute of the Austrian Universities, TU Vienna)
14/06/2011, 11:30
FLUKA models and predictions. Comparison between measurements and simulations. Safety margins.
Alessandro Dallocchio
(CERN)
14/06/2011, 11:50
Short description phase 1 design. Second generation collimators. Improved jaw materials. Collimators for cryogenic regions (warm/cold solution).
Keith Kershaw
(CERN)
14/06/2011, 12:15
Highlights from work for collimation remote handling and remote survey. Plans.
Steve Myers
(CERN)
14/06/2011, 14:00
Dr
Ralph Assmann
(CERN)
14/06/2011, 14:05
Outline of collimation upgrade plan. What is planned when and why? What are the questions arising for this upgrade plan?
Vittorio Parma
(CERN)
14/06/2011, 14:35
Foreseen work in IR3 for first long shutdown? Short description. Planning aspects.
Adriana Rossi
(CERN)
14/06/2011, 14:55
What is lost when not doing the IR3 upgrade? Gain from DS collimators. Performance reach without (see also morning presentation) and with dispersion suppressor collimators for protons.
Giulia Bellodi
(CERN)
14/06/2011, 15:15
Ion performance reach without and with dispersion-suppressor collimators in IR3. Other ion limitations (IR2, ...). Possible impact from delay of IR3 work on IR2 upgrade of dispersion suppressors.
Dr
Vittorio Boccone
(CERN)
14/06/2011, 15:50
Predicted energy deposition with and without IR3 dispersion suppressor collimators. Gain from collimators. Performance reach from comparing peak heat deposition with quench limit. Comparison with MD results.
Nicolas Mounet
(Ecole Polytechnique Federale de Lausanne (EPFL)-Unknown-Unknown)
14/06/2011, 16:10
Impedance from tight collimation settings as achieved in MD. Will the beams be stable with impedance, taking into account stabilization from transverse damper and octupoles?
Philippe Lebrun
(CERN)
14/06/2011, 16:30
Conclusions from May review in EN/TE departments. Technical feasibility? Major risks? Any show-stoppers identified?
Stefan Roesler
(CERN)
14/06/2011, 16:55
Expected activation levels. Are additional limits expected on work in dispersion suppressors during later shutdowns?
