Plans towards CC in the LHC a US – centric perspective

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Presentation transcript:

Plans towards CC in the LHC a US – centric perspective Ratti LBNL

Outline Where we are…. SPS test considerations …and where we think we are going SPS test considerations Reaching the LHC baseline Organization US (LARP++) role and planned contribution

Global Collaboration Active collaboration with the UK and CERN Cryomodule concepts Engineering analysis System integration Ideas and experience exchange Tremendous amount of skills and knowledge among collaborators Best chance to develop an excellent CC system

SPS vs. LHC SPS LHC implementation will need SPS results + much more 3-4 year focus Downselected many objectives Streamlined goals to simplify systems and provide more fundamental answers Ie. Does crabbing work with proton beams? We don’t need active alignment to verify this Not testing in the LHC LHC implementation will need SPS results + much more

Roles within LARP EM modeling of all systems – SLAC Cavity Design – BNL and ODU Cryostat design and integration – FNAL Close collaboration with CERN and the UK teams Plan to get even closer, through weekly meetings and other integration events Niowave built all PoP systems and is funded to build prototype hardware through the DOE SBIR program Proposing an industrialization plan for a team discussion tomorrow

Collaborative events Besides dedicated breakouts at all collaboration meetings and other LARP or HL-LHC events Dec 12 – Planning meeting at FNAL May 13 –Cryomodule Integration at FNAL https://indico.fnal.gov/conferenceDisplay.py?confId=6859 Jul-Aug 13 – CM Conceptual Design at CERN https://indico.cern.ch/conferenceDisplay.py?confId=263565

Upcoming events DoE review of LARP – Feb 14 Design freeze – Mar. 2014 Release cavity models to Niowave Technical Advisory Panel - Apr. 14 Possibility to combine with CM23 LARP HL-LUMI collaboration meeting in May 7-9

Ongoing work - 2014 LARP plans to complete one fully dressed prototype cavity of each LARP design (DQW and RFD) by the end of September Deliver complete 3D model to Niowave by March Niowave generates production drawings and builds cavities by September Testing later in the year Vertical Test Stands in the US Sending existing proof of principle cavities to CERN for testing in SM18

Ongoing work – Future years After VT measurement results prepare deliverable for SPS test Cyomodule and cavity integration Power couplers desired by early 2016 And no later than summer 2016 Test in SM18 Installation and run in SPS

What will go in the SPS? Establishing selection criteria soon Define what is required and what is important Provocative comment for cavity selection Any cryomodule to meet requirements and pass SM18 Horizontal test in 2016 has a great chance to be installed in the SPS Ultimately it is a CERN decision

What we need from CERN Extended specifications and requirements or clarifications Parts and materials Coated flanges, raw materials (steel, possibly Nb…) Possible procurement of cavities or cryostats to overcome limits in funding Survey interfaces Equipment Power couplers May need help with 400 MHz hardware for US test stand Amplifiers, LLRF Documentation framework Safety ‘folder’ + its management Documentation repository

What we need from CERN (cont.) Engineering Mechanical (Thermal+Stress+Sensitivity) analysis of all cavities and cryomodules Pressure Vessel Safety + beyond SM18 tests of PoP cavities and Horizontal Tests of cryomodules Magnetic field measurements of SPS PT4 area Plus, of course, integration, RF power, Cryo, MPS, Instrumentation….

SPS plans - comments LARP remains committed to supporting this activity. Managing yearly budget and work plan to maximize US contribution in light of ever changing funding allocations. For now, “Flat is the new Up”  Revised schedule adds flexibility If LS2 starts after the 2018 run testing in the SPS more than one cryomodule would be more feasible.

LARP Plans for SPS Test Working with CERN and UK to integrate our efforts LARP plans to participate in the tests by delivering hardware And contribute to integration and installation Direct participation in MDs once the system is installed

Open questions towards the LHC Implement active alignment - OK Cryomodule configuration N of cavities per CM? 2x4 vs 1x8 vs…. Cavity design (H vs V) - is the ability to kick in both planes a requirement for any cavity? What is the *final* operating gradient/kick per cavity? Final aperture? Impedance budget --> what is the acceptable n of cavities, HOM damping requirements… Field quality requirement? Crab in both planes at both IPs? (ie. kissing) Magnetic shielding? ….and more…. We will need to finalize all of the above (and more) before deriving a baseline design of the cryomodule for the HL-LHC….in TDR in 2016? Mismatch with timing of SPS test results

US Scope of work - Today LARP R&D US Construction project Deliver one cryomodule for testing in the SPS 2 cavities, He vessels, tuners, HOM mode dampers RF power couplers, RF power, Cryogenics, local installation provided by CERN US Construction project Deliver N cryomodules with M cavities each Contain cavities, He vessels, tuners, HOM mode dampers Cryogenics, RF power, local installation provided by CERN Until a formal baseline is established and agreed by the sponsoring agency, changes in yearly funding could impact these plans Probably similar for other participants (ie. UK) CERN is involved in the process

US Construction Project Crab cavities are included among the tasks selected in December 2012 as part of the construction project in support of the HL-LHC. Feedback from DOE reminds that the effort on crab cavities should be carried through construction. Should not limit US contribution to the SPS test Working with the collaboration to define the best possible contribution. Need clear deliverables by ~2016-2017 if the project baseline is defined then

Conclusions US remains committed to contributing to the CC project in all phases all the way though the installation and commissioning in the HL-LHC Working with the active, global collaboration LARP Crab Cavities R&D well underway Starting prototype production soon SPS test contributions in the plans for yearly LARP activities US Construction project to include a significant contribution to the Crab Cavities Baseline scope and cost still in preparation

Questions?