Neutrino Factory Target Cryostat Review (Update Aug 12) Van Graves Cale Caldwell IDS-NF Phone Meeting August 10, 2010.

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Presentation transcript:

Neutrino Factory Target Cryostat Review (Update Aug 12) Van Graves Cale Caldwell IDS-NF Phone Meeting August 10, 2010

2Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Iron Plug Proton Beam Nozzle Tube SC-1 SC-2 SC-3SC-4 SC-5 Window Mercury Drains Mercury Pool Water-cooled Tungsten-Carbide Shield Mercury Jet Resistive Magnets Neutrino Factory Study 2 Target Concept ORNL/VG Mar2009 Splash Mitigator General Target Concept – Downstream Mercury Drain

3Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 General Target Concept – Upstream Mercury Drain Iron Plug Proton Beam Nozzle Tube SC-1 SC-2 SC-3SC-4 SC-5 Beam Window Mercury Drain Mercury Pool/ Beam Dump Water-Cooled Tungsten-Carbide Shield Resistive Magnets Water Drain

4Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 NF Cryostat with Tapered Shielding Taper matches capture field No shielding under mercury Mercury chamber trapped inside shielding

5Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Tapered Shielding Concept Dimensions Dimensions in cm

6Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Cryostat Modules All insertion/extraction from upstream end Locating & supporting features not shown – will require additional space Mechanical assembly of mercury chamber and shielding module not possible in this configuration

7Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Cryostat Modules Full View Module weights supported by cryostat? Remote handling of these modules not trivial

8Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Assembled Cryostat Resistive magnet leads & water cooling for these modules also enter from upstream

9Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Some Questions as Design Progresses Can system perform without iron plug and/or resistive magnets? – Removal simplifies remote maintenance, provides more space for nozzle & beam dump. What does internal cryostat structure (weight support, magnet force restraints) look like, and how does it affect overall cryostat size? Are 5 SC magnets required in this cryostat? – Downstream beam window should be at end of cryostat for remote maintenance from downstream end. What shielding thickness is required to protect SC1? – This will ultimately drive cryostat bore diameter.

10Managed by UT-Battelle for the U.S. Department of Energy NF Target Cryostat Review 10 Aug 2010 Summary & Reminders Current NF target design based on physics performance characteristics Further consideration shows it is an assembly of several subsystems, each with different design requirements and trade-offs – Several areas of engineering-related R&D, including heat removal, Hg flow, nozzle development, beam windows With Hg target (nor with any other target), hands-on maintenance cannot be assumed at any point in operation – Remote features must be incorporated into initial design Final system concept will result from an integrated design approach with input from several technical areas