Solid Magnet
From Hall A Wiki
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 | ||||
