Difference between revisions of "Solid Magnet"
From Hall A Wiki
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| + | ==Genearal== | ||
| + | |||
Integral to the SoLID spectrometer design is a large solenoid. Several existing solenoids are under consideration by the collaboration. These include the magnets from [http://www.slac.stanford.edu/BF/ Babar], [http://w4.lns.cornell.edu/Research/EPP/CLEO/ Cleo], [http://www-cdf.fnal.gov/ CDF] and [http://www-zeus.desy.de/ ZEUS] | Integral to the SoLID spectrometer design is a large solenoid. Several existing solenoids are under consideration by the collaboration. These include the magnets from [http://www.slac.stanford.edu/BF/ Babar], [http://w4.lns.cornell.edu/Research/EPP/CLEO/ Cleo], [http://www-cdf.fnal.gov/ CDF] and [http://www-zeus.desy.de/ ZEUS] | ||
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| align="center" colspan="5" | Excel File to help make poisson input [http://www.jlab.org/~reimer/SoLID/Magnet/magnets.xlsx magnets.xlsx] | | align="center" colspan="5" | Excel File to help make poisson input [http://www.jlab.org/~reimer/SoLID/Magnet/magnets.xlsx magnets.xlsx] | ||
|} | |} | ||
| + | |||
| + | == How to produce the filed map == | ||
| + | * use program "Possion Superfish" from LANL http://laacg1.lanl.gov/laacg/services/download_sf.phtml or local copy [http://hallaweb.jlab.org/12GeV/SOLID/download/PoissonSuperfish_7.18.exe] | ||
| + | : It's a windows program and need installation, it can run with wine in linux or winXP, but not win7 | ||
| + | : see manuals for detailed help, especially for the postprocessor program SF7.EXE | ||
| + | * produce mesh by AUTOMESH.EXE with input from a ".am" file, output file will be ".T35" with only geometry and material | ||
| + | * then run POISSON.EXE with the ".T35" file which will be added with field. | ||
| + | * use WSFPLOT.EXE to view the ".T35" file | ||
| + | * then run SF7.EXE on the ".T35" file, do the field extrapolation for a line, arc or grid, the result is in a txt file "OUTSF7.TXT" | ||
| + | : a ".TBL" filed file may be produced also which can be directly viewed by TABLPLOT.EXE | ||
| + | |||
| + | == Field map files == | ||
| + | |||
| + | all files are at svn "database_io/halla12/solid/field/" | ||
| + | |||
| + | * BaBar_from_Eugene has center of solenoid is at 600cm) | ||
| + | * BaBar magnet files created by Zhiwen is based on Eugene's file but moved to the center of solenoid to origin | ||
| + | |||
| + | ---- | ||
[http://hallaweb.jlab.org/wiki/index.php/SoLID Return to SoLID main page] | [http://hallaweb.jlab.org/wiki/index.php/SoLID Return to SoLID main page] | ||
Revision as of 12:58, 8 February 2011
Genearal
Integral to the SoLID spectrometer design is a large solenoid. Several existing solenoids are under consideration by the collaboration. These include the magnets from Babar, Cleo, CDF and ZEUS
| Babar | CLEO | CDF | ZEUS | |
|---|---|---|---|---|
| Cryostat Inner Radius | 150 cm | 150 cm | 150 cm | 86 cm |
| Length | 345 cm | 350 cm | 500 cm | 245 cm |
| Central Field | 1.49 T | 1.5 T | 1.47 T | 1.8 T |
| Compact Flux Return | Yes | Yes | No | No |
| Current density variation | Yes | ?? | No | 25% more current at ends |
| Magnet Map Update Date | 7 Feb 2011 | 4 Feb 2011 | 4 Feb 2011 | |
| Poisson input deck | BABARv3.am | CDFv2.am | ZEUSv1.am | |
| Poisson SF7 output on 1 cm grid | BABARv3.sf7 | CDFv2.sf7 | ZEUSv1.sf7 | |
| PDVIS target Location | z=0 | z=+50 | z=0 | |
| Notes: (1) the center of the magnet is taken as the orgin. The target offset for the CDF magnet makes up for the fact that the magnet is longer than the Babar magnet. (2) The upstream pole pieces of the CDF and ZEUS magnets can be angles for SIDIS acceptance needs | ||||
| Excel File to help make poisson input magnets.xlsx | ||||
How to produce the filed map
- use program "Possion Superfish" from LANL http://laacg1.lanl.gov/laacg/services/download_sf.phtml or local copy [1]
- It's a windows program and need installation, it can run with wine in linux or winXP, but not win7
- see manuals for detailed help, especially for the postprocessor program SF7.EXE
- produce mesh by AUTOMESH.EXE with input from a ".am" file, output file will be ".T35" with only geometry and material
- then run POISSON.EXE with the ".T35" file which will be added with field.
- use WSFPLOT.EXE to view the ".T35" file
- then run SF7.EXE on the ".T35" file, do the field extrapolation for a line, arc or grid, the result is in a txt file "OUTSF7.TXT"
- a ".TBL" filed file may be produced also which can be directly viewed by TABLPLOT.EXE
Field map files
all files are at svn "database_io/halla12/solid/field/"
- BaBar_from_Eugene has center of solenoid is at 600cm)
- BaBar magnet files created by Zhiwen is based on Eugene's file but moved to the center of solenoid to origin
