Mon Oct 27 LC-ABD, Dundee 1

Positron Target Prototype - Status

Leo Jenner

Mon Oct 27 LC-ABD, Dundee 2

Overview

• Then

• Now

• Simulations

• Thermal Calibration

• Project plan

• Outstanding Issues

Mon Oct 27 LC-ABD, Dundee 3

ILC

Mon Oct 27 LC-ABD, Dundee 4

Mon Oct 27 LC-ABD, Dundee 5

Mon Oct 27 LC-ABD, Dundee 6

• 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 )

Mon Oct 27 LC-ABD, Dundee 7

Mon Oct 27 LC-ABD, Dundee 8

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)

Mon Oct 27 LC-ABD, Dundee 9

Just waiting on:

• Safety sign-off

• Cage interlocks

• …Immersion calibration

• …Water and power re-connection to magnet

• …Cooling nozzle design and implementation

Mon Oct 27 LC-ABD, Dundee 10

• Data taking begins shortly !

• …hopefully…

Mon Oct 27 LC-ABD, Dundee 11

…ACTION!