1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela...
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Transcript of 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela...
![Page 1: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/1.jpg)
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TTF Superconducting Quadrupole Doublet
Simulation with MAFIA to compare with Measurements
Michaela Marx27 March 2006
![Page 2: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/2.jpg)
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Sketch from technical drawing
shielding plate shielding plateQuadrupole Doublet
beam direction
![Page 3: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/3.jpg)
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TTF Quadupole: General Information
• iron quality: HERA Iron
• laminated plates, 5 mm thickness
• aperture radius = 56 mm
• length: 150 mm
• distance between 2 Quads in doublet: 100 mm
• maximum current: 60 A
![Page 4: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/4.jpg)
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The MAFIA Model: 2d view
One quarter of the quadrupole has been discretized on a rectangular grid,(grid distance = 1 mm).
Coil is simulated by 5 filaments.
![Page 5: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/5.jpg)
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The MAFIA Model: 3D view
![Page 6: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/6.jpg)
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MAFIA: Calculation Results
Field Babs plotted in beam direction at different radial positions near pole tip,
I = 30 A, both quadrupoles focus in the same plane
Bmax = 194.7 mT
Bmax = 179 mT
Bmax = 163.5 mT
![Page 7: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/7.jpg)
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MAFIA: Calculation Results
Gradient g = 11 T/m
TTF Quadrupole Doublet, I = 30 A
![Page 8: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/8.jpg)
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Measurement: Sketch of the testing probe
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10
yx z
Probenvolumen (x y z): 0.2 x 1.5 x .5 mm3
41
8.5
41
Probenhalter in Messrohr (~42.5),Probe im Messrohr frei, daher radiale Position nicht genau bestimmt!!!
(Transparency from H. Brück)
![Page 9: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/9.jpg)
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Measurements
Measurements have been done for a quadrupole doublet with I=30 and I=60 A.Both quadrupoles focus in the same plane.
Bmax = 293 mT
Bmax = 177.8 mT
![Page 10: 1 TTF Superconducting Quadrupole Doublet Simulation with MAFIA to compare with Measurements Michaela Marx 27 March 2006.](https://reader030.fdocuments.us/reader030/viewer/2022032516/56649c795503460f9492e3d1/html5/thumbnails/10.jpg)
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Results: Comparison of Measurement and MAFIA Simulation
Good agreementbetween simulation andmeasurement.
Exact position ofmeasurementcould not bedetermined andwas estimated tocompare with thesimulation.
= More calculations will follow for lower currents and different current distributions to simulate a quadrupole doublet consisting of a horizontal and a vertical focussing quadrupole.
Deviation of ΔB = 1.2 mT