The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme.

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The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme.

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Presentation transcript:

The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement Discussion led by Provocateur 1USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN Mainly focusing on the Plenary and Accelerator Systems Sessions With input from many colleagues and information from coffee discussions!

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 2 Questions and Comments: Magnets 1.Gianluca: decision to split Q1 and Q3 based on managerial approach.  Should we come back to this decision and make sure the same criteria are applied to the Q1-Q3 and the Q2 designs? 2.Length control for the triplet coils and FQ: are we ready for accelerator grade manufacturing? 3.Need for confident time estimates for new triplet magnet production (critical ingredient to LS2 and LS3 planning)!  Ezio: Rejection rate for coils?; Gianluca: 6 to 12 month potential delay of the delivery time.

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 3 Questions and Comments: Magnets 4.Is there anything else one can do to shorten the time to have a final MQXF prototype (2017!)? 5.Smallest acceptable beam size at IP (    = 10cm  beam size of ca. 5  IP and triplet)  implications on triplet magnet tolerances and monitoring (vibrations, aperture etc.)? 6.40% difference in radiation dose between MARS and FLUKA for MCBX-3? 7.Lucio: CERN’s role in the USLARP management for the magnet production?

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 4 Questions and Comments: Beam Dynamics 8.Origin of the observed emittance growth during 2012 operation (ca. 30% but not equal in both beams and both planes)?  do we have adequate Beam Instrumentation for identifying the origin and for curing the cause for HL-LHC operation? What needs to be done for getting Schottky; Head- What needs to be done for getting Schottky; Head- Tail monitor and the monitor for high bandwidth Tail monitor and the monitor for high bandwidth feedback systems operational in the LHC? feedback systems operational in the LHC? 9.Can we exclude e-cloud activity for 50ns operation  do we have adequate Beam Instrumentation?

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 5 Questions and Comments: e-Lens 10.Currently no USLARP proposal to contribute to Halo monitor development?  Key device for validating the hollow e-lens and it’s operation in the LHC!  Does USLARP really NOT want to be actively involved in this development? involved in this development?

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 6 Questions and Comments: RF 11.Promising progress for Crab Cavities: Congratulations!!!  But do we have selection criteria in place for choosing the final cavity type? Should avoid ‘first come first serve’ decision while keeping an eye on the timing constraints from the SPS test.  How will the remaining teams be integrated into the ‘winning bid’? Possibility for more then one cavity type for the final LHC implementation? 12.Need for confident estimates for Crab Cavity production times (critical ingredient to LS2 and LS3 planning)!  SPS tests and required infrastructure preparation (Erk’s talk);

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 7 Questions and Comments: RF 13.When do we need to take a decision on CC tests in the LHC IR4 to be useful or feasible (required preparation work and potential space conflict with other proposals)? 14.Compatibility of default RF operation mode (phase modulation) with Higher Harmonic RF system (800MHz)?  ‘square’ bunch profile and lower IBS 15.Possibility and impact of a lower frequency HL-LHC RF system (e.g. 200 MHz)  impact on Crab Cavity development and operation scenario’s without Crab Cavities?

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 8 Questions and Comments: General 16.Is the current LARP structure adequate for the transition to a production project (separation between Magnet and Accelerator Systems etc.; WPs with deliverables)? 17.Are GARD grants really a realistic option for funding of ‘additional’ HL-LHC developments (if yes, what is the actual ceiling for such requests-proposals)? 18.What would LARP like from CERN (or: what can CERN do to facility the LARP program)?

USLARP Collaboration Meeting 8-10 April 2013, Napa Ca Oliver Brüning BE-ABP CERN 9 Questions and Comments: General 19.Future of LTV program?  requires adequate funding! 20.Is it the right time to remove the ‘R’ in LARP?