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№1 слайд![Positron Target Prototype](/documents_6/facab74a37ff217553f71ed5bb7f7926/img0.jpg)
Содержание слайда: Positron Target Prototype – Current Status
Leo Jenner
Jim Clarke, Ian Bailey
Ken Davies, Andy Gallagher, Lei Zang
№2 слайд![Overview Then Now Simulations](/documents_6/facab74a37ff217553f71ed5bb7f7926/img1.jpg)
Содержание слайда: Overview
Then
Now
Simulations
First torque data
Thermal Calibration
Project plan
Outstanding Issues
№3 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img2.jpg)
№4 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img3.jpg)
№5 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img4.jpg)
№6 слайд![Eddy current modelling summary](/documents_6/facab74a37ff217553f71ed5bb7f7926/img5.jpg)
Содержание слайда: Eddy current modelling summary
№7 слайд![Validation of Carmen model](/documents_6/facab74a37ff217553f71ed5bb7f7926/img6.jpg)
Содержание слайда: Validation of Carmen model
№8 слайд![Final Carmen models](/documents_6/facab74a37ff217553f71ed5bb7f7926/img7.jpg)
Содержание слайда: Final Carmen models
№9 слайд![The plan is still the same](/documents_6/facab74a37ff217553f71ed5bb7f7926/img8.jpg)
Содержание слайда: 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 )
Study of rotor-dynamics (LLNL: accelerometers)
№10 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img9.jpg)
№11 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img10.jpg)
№12 слайд![Just waiting on Final safety](/documents_6/facab74a37ff217553f71ed5bb7f7926/img11.jpg)
Содержание слайда: Just waiting on:
Final safety sign-off
…Immersion calibration
…Water and power re-connection to magnet
…Cooling nozzle design and implementation
I’ve still got one month…
№13 слайд![Data taking begins shortly !](/documents_6/facab74a37ff217553f71ed5bb7f7926/img12.jpg)
Содержание слайда: Data taking begins shortly !
…hopefully…
(I look forward to showing you around tomorrow!)
№14 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img13.jpg)
№15 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img14.jpg)
№16 слайд![](/documents_6/facab74a37ff217553f71ed5bb7f7926/img15.jpg)
№17 слайд![Hi Leo The models use the](/documents_6/facab74a37ff217553f71ed5bb7f7926/img16.jpg)
Содержание слайда: Hi Leo
The models use the Electra VL solver (not normal electra solver) the normal electra module solves for time varying electro magnetic fields the VL version models the effects of motion induced eddy currents, it does this by assigning an a velocity vector to the conducting material, it is assumed that the driving fields are stationary and the eddy are induced in the moving component, It also assumes that the geometry does not change with time,(for the wheel problem this means we cannot model the spokes). The CARMEN solver is a full transient solver it allows parts on the mesh to rotate it solves for eddy currents induced in a conducting media by time varying fields and by motion. The solution makes no assumptions about the problem symmetry.
hope this helps
cheers jim
James Rochford
Science & Technology Facilities Council
Cryogenics Group, Technology
Rutherford Appleton Laboratory
Harwell Science and Innovation Campus
Building R65 G08
Chilton, Didcot
OXON
OX11 0QX