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Positron Target Prototype - Status

Positron Target Prototype - Status. Leo Jenner. Overview. The set-up Latest Simulation Project plan Progress. ILC. The plan is still the same…. Sweep in parameter space of B-Field, Rotation Speed and Immersion (1 T, 2000 rpm, 50 mm) Observation of kicks as spokes traverse field

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Positron Target Prototype - Status

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  1. Positron Target Prototype - Status Leo Jenner LC-ABD / LCUK, Bristol

  2. Overview • The set-up • Latest Simulation • Project plan • Progress LC-ABD / LCUK, Bristol

  3. ILC LC-ABD / LCUK, Bristol

  4. LC-ABD / LCUK, Bristol

  5. LC-ABD / LCUK, Bristol

  6. The plan is still the same… Sweep in parameter space of B-Field, Rotation Speed and Immersion (1 T, 2000 rpm, 50 mm) Observation of kicks as spokes traverse field Measurement of eddy currents by torque and direct heating ( Lei Zang: PhD student, Liv ) Additional support from Duncan Scott ( ASTeC ) Study of rotor-dynamics (LLNL: accelerometers) Simulations from Jim Rochford (RAL) in parallel with LLNL Tues Mar 24 LC-ABD / LCUK, Bristol 6

  7. Immersion 2000 rpm 1500 rpm 1000 rpm 500 rpm Speed 1.0 0.8 0.6 0.4 0.2 0 B-field Tues Mar 24 LC-ABD / LCUK, Bristol 7

  8. Carmen spoke model • Model results; full revolution • Here we see the torque peaks correspond to each point a spoke crosses the –ve X axis i.e. when a spoke passes through the coil centres 90o 162o 18o rotation 234o 18o 162o 234o 306o 90o 306o • Retarding torque predicted by CARMEN for 100rpm for a full revolution Alignment at t=0

  9. LC-ABD / LCUK, Bristol

  10. LC-ABD / LCUK, Bristol

  11. Conclusion • I’m confident the experimental programme will be completed in the next 2 months • PAC paper, NIM paper will follow • Thank you and goodbye!

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