Model 44 - 28/12/2012
test model 44 op3 - solution file.
test model 44 - associated build files.
test model 44 - comi snapshot.
Solve Time = 32 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c - Holger's Shield (Closed & Flanges).
Rack Configuration: 2mm Skin, 50mm Airgap, Reduced Core.
08/01/2013 Committed comi code to Launchpad Repository via Bazaar. Revision 17. (Model 44)
Model 43 - 21/12/2012
test model 43 op3 - solution file.
test model 43 - associated build files.
Solve Time = 36 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c - Holger's Shield (Closed & Flanges).
Rack Configuration: 2mm Skin, 9 Solid Cubes.
Model 42 - 20/12/2012
test model 42 op3 - solution file.
test model 42 - associated build files.
test model 42 - comi snapshot.
Solve Time = 48 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c - Holger's Shield (Closed).
Rack Configuration: 2mm Skin, 9 Solid Cubes.
21/12/2012 Committed comi code to Launchpad Repository via Bazaar. Revision 16. (Model 42)
Model 41 - 19/12/2012
test model 41 op3 - solution file.
test model 41 - associated build files.
Solve Time = 31 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c - Holger's Shield (Closed + Flanges).
Rack Configuration: 2mm Skin, Single Solid Cube in Centre.
Model 40 - 18/12/2012
test model 40 op3 - solution file.
test model 40 - associated build files.
Solve Time = 40 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c - Holger's Shield (Closed).
Rack Configuration: 2mm Skin, Single Solid Cube in Centre.
Model 39 - 13/12/2012
test model 39 op3 - solution file.
test model 39 - associated build files.
test model 39 - comi snapshot.
Solve Time = 63 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
There is now an option to be able to split the remnant iron mass of the rack (i.e. the mass of iron not contained in the skin) into nine pieces of equal mass. One piece in the centre and one piece in each corner. The distance from each corner is controlled by the air gap variable. The model is primarily intended to serve as a comparison with test models 38 and 36.
13/12/2012 Committed comi code to Launchpad Repository via Bazaar. Revision 15. (Model 39)
Model 38 - 12/12/2012
test model 38 op3 - solution file.
test model 38 - associated build files.
test model 38 - comi snapshot.
Solve Time = 47 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
The code has been updated so that there is now an option to be able to place the remnant iron mass of the rack (i.e. the mass of iron not contained in the skin) into the centre of the rack as a solid lump. This is a model of the racks in the MICE Hall under this assumption. The model is primarily intended to serve as a comparison with 'test model 36'
12/12/2012 Committed comi code to Launchpad Repository via Bazaar. Revision 14. (Model 38)
12/12/2012 Closer inspection of Holger's shield has revealed a few discrepancies between his and my model. There is a geometry difference in the way that we have interfaced the shield to the Virostek Plates. Holger is now running a 12cm shield and this is modelled as a 10cm shield. I will make these corrections and re-run these models at a later date. Holger also has a concern about the on-axis field, he thinks it looks a little high. This needs investigating but my suspicion is that this is due to these models using the TRD magnet design at 240MeV/c - Later confirmed by Mike.
Model 37 - 10/12/2012
test model 37 op3 - solution file.
test model 37 - associated build files.
test model 37 - comi snapshot.
Solve Time = 43 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
This model connects the Virostek Plates to Holger's Step IV shield to improve the flux return path, as suggested by Holger. Several improvements have been made to both the meshing and the object construction in the area around the solenoids. Note: It is not possible to hexahedrally mesh the Virostek plates when they are extended to meet Holger's shield walls.
Model 36 - 07/12/2012
test model 36 op3 - solution file.
test model 36 - associated build files.
test model 36 - comi snapshot.
Solve Time = 41 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
As model 35 but this also includes Holger's step IV shield.
07/12/2012 Committed comi code to Launchpad Repository via Bazaar. Revision 13.
07/12/2012 I have noted that the step IV magnets and shield are centered at -2750mm but the Virostek plates are centrered around -2790mm. This 40mm discrepancy is because the magnets files are based upon the original TRD design, but the magnet dimensions have changed slightly since then. This means that the Step IV channel is not quite central wrt the Virostek plates.
Model 35 - 06/12/2012
test model 35 op3 - solution file.
test model 35 - associated build files.
test model 35 - comi snapshot.
Solve Time = 47 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
This model has an additional 50mm airgap between the outerskin of the racks/compressors and the reduced volume. This could be useful in indicating whether the outer skin has any shielding effect upon the internal ferrous components. The meshing resolution of the racks has been reduced slightly to see what effect this has on the solve time.
Model 34 - 04/12/2012
test model 34 op3 - solution file.
test model 34 - associated build files.
test model 34 - comi snapshot.
Solve Time = 46 hours.
Magnet Configuration: Step IV Solenoid - 240MeV/c.
Same as Test model 33 but with the addition of racks behind the NSW and the Compressor racks against the West Wall. In all cases the rack wall thickness has been set to 2mm and the rest of the mass of the racks have been 'reduced' into the volume of the racks. This is an approximation that presumes the iron has been distributed evenly throughout the volume of the racks and then the BH curve is reduced by a factor of (Normal Iron Volume)/(Distributed Iron Volume). For details see .comi scripts contained within the directory.