Difference between revisions of "Solid Magnet"
From Hall A Wiki
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* "solenoid_BaBar.am" BaBar magnet files created by Zhiwen, based on Eugene's file but moved to the center of solenoid to origin | * "solenoid_BaBar.am" BaBar magnet files created by Zhiwen, based on Eugene's file but moved to the center of solenoid to origin | ||
* "BABARv3.am" BaBar magnet by Paul | * "BABARv3.am" BaBar magnet by Paul | ||
− | * " | + | * "CDFv3.am" CDF magnet by Paul |
* "ZUESv1.am" ZUES magnet by Paul | * "ZUESv1.am" ZUES magnet by Paul | ||
Revision as of 16:22, 2 March 2011
Contents
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 | CDFv3.am | ZEUSv1.am | |
Poisson SF7 output on 1 cm grid | BABARv3.sf7 | CDFv3.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 |
talk and note
SoLID Magnet Options (and unstudied calorimeter thoughts)(Paul Reimer)
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 input files
all files are at svn "database_io/halla12/solid/field/"
- "babar_transv_3_4.am" BaBar_magnet from_Eugene with center of solenoid at 600cm
- "solenoid_BaBar.am" BaBar magnet files created by Zhiwen, based on Eugene's file but moved to the center of solenoid to origin
- "BABARv3.am" BaBar magnet by Paul
- "CDFv3.am" CDF magnet by Paul
- "ZUESv1.am" ZUES magnet by Paul
Field map output files
located at Solid website http://hallaweb.jlab.org/12GeV/SoLID/download/
- sf7 files are direct output from possion program
- dat files are conversion from sf7 to GEMC format
refer to Magnetic_Field_Map