Water Tests of Hg System V.B. Graves P.T. Spampinato Muon Collaboration Friday Meeting Dec 8, 2006.

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Presentation transcript:

Water Tests of Hg System V.B. Graves P.T. Spampinato Muon Collaboration Friday Meeting Dec 8, 2006

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 2 MC Friday Meeting 8 Dec 2006 System Assembly Nearly Complete  Primary containment completed  Issues with piping resolved, final fit-up completed  All sensors and optical diagnostics installed and operational  Final steps to assemble secondary containment underway

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 3 MC Friday Meeting 8 Dec 2006 SS Water Test Nozzles  Nozzle A – diameter reduction after bend, 2.5° nozzle angle  Nozzle B – reduction before bend, 2.5° nozzle angle  Nozzle C – test nozzle with reduction after bend, straight nozzle tip, internally similar to nozzle A  Nozzle D – nozzle A after reaming out the tip Nozzle B Nozzle C Nozzle A

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 4 MC Friday Meeting 8 Dec 2006 Results  Nozzle B spray worse than Nozzle A  Neither jet was acceptable  Definite increase in jet diameter at higher velocities  Nozzle C gave best results  Water droplets on windows was a problem Nozzle A, 20m/s Nozzle B, 20m/s Nozzle C, 20m/s

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 5 MC Friday Meeting 8 Dec 2006 Nozzle Issues  Flow path is a three-piece weldment  Inlet tube  Nozzle flange  Short angled nozzle tip  Change in direction required for beam to miss piping geometry  Smooth path requires constant ID  Investigation revealed SS nozzles had step in flow path (flange thru hole smaller than tube IDs) Inlet Exit Dimensions in inches

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 6 MC Friday Meeting 8 Dec 2006 Nozzle D Tested  Nozzle A was manually modified using drill bits to provide nearly constant ID from flange to tip  Tests showed definite improvement, but still not satisfactory  Field of view 5.5cm, so Nozzle D generates ~2cm jet Nozzle A, 20m/s Nozzle D, 20m/s

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 7 MC Friday Meeting 8 Dec 2006 Path Forward  Water test results discussed among MERIT collaboration  Best chance of success is to reproduce straight nozzle C  Changing direction just before nozzle exit has not proven to provide satisfactory results  Piping still requires "kink" to avoid beam, but new design will move kink in front of 180deg bend  New nozzles will be fabricated with Ti, the actual design material  Enough Ti on hand to produce two configurations  Machining and drawings ready for a Ti nozzle A  Developing models and drawings for a new nozzle E

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 8 MC Friday Meeting 8 Dec 2006 Nozzle E configuration  Straight flow path after 180deg bend  "Kink" made prior to bend  Nozzle angle and elevation being finalized  Proceed with fabrication ASAP Elevation View Detail View Nozzle to be cut to length after pressure testing

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 9 MC Friday Meeting 8 Dec 2006 ORNL Readiness Review  Internal ORNL review held to determine if necessary steps are in place for mercury operations  No issues noted as long as safety equipment is in place and operating procedures are followed  MERIT collaboration discussing when to start Hg tests  Use existing nozzles or wait for Ti versions  Syringe has never been Hg tested  Cannot switch back to water after Hg introduced  Have to consider waste issues

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 10 MC Friday Meeting 8 Dec 2006 Current Status / Next Steps  Fabricate Ti nozzle(s) immediately  Complete secondary containment  Assemble and check for air leaks  Install Hg vapor filters  Clean inside of viewports before introduction of Hg  Conduct Hg tests  Working on equipment transport issues  Equipment crating is being fabricated