Jan '09Positron Target Status1 Positron Target Prototype - Status Leo Jenner.

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Presentation transcript:

Jan '09Positron Target Status1 Positron Target Prototype - Status Leo Jenner

Jan '09Positron Target Status2 Overview Then Now Simulations Thermal Calibration Project plan Outstanding Issues

Jan '09Positron Target Status3 ILC

Jan '09Positron Target Status4

Jan '09Positron Target Status5

Jan '09Positron Target Status6 Magnetic simulations at DL Vector Fields Opera with Elektra rotation solver Magnet modelled as two coils Calculate expected power losses from eddy currents as wheel rotates, and resistive force this generates Spoked modelling taking place at RAL ( J. Rochford )

Jan '09Positron Target Status7

Jan '09Positron Target Status8 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 ) Study of rotor-dynamics (LLNL: accelerometers)

Jan '09Positron Target Status9 Torque measured 480 revolutions per minute reached so far

Jan '09Positron Target Status10 1 st data with magnet on! ( 300 rpm, 0.1T )