[Dsg-hallc_controls] Current settings for SHMS & HMS magnets

Mike Fowler fowler at jlab.org
Mon Jul 23 16:19:58 EDT 2018


Hi,

For the current setting for the HMS Quadruple magnets & SHMS magnets I 
can provide the following variables.

The target set currents will be:
These are signed variables, with the sign being the sign the power 
supply is supposed to have.
You will use the absolute value to set the power supply. The sign can be 
used to check the sign of the power supply.

ecQ1_I_Target
ecQ2_I_Target
ecQ3_I_Target
ecSDI_I_Target
ecSHB_I_Target
ecSQ1_I_Target
ecSQ2_I_Target
ecSQ3_I_Target

The overshoot settings if ramping up will be:
These are not signed.

ecQ1_I_MOL
ecQ2_I_MOL
ecQ3_I_MOL
ecSDI_I_MOL
ecSHB_I_MOL
ecSQ1_I_MOL
ecSQ2_I_MOL
ecSQ3_I_MOL

The target field for the HMS dipole NMR unit is:
This is signed. You will use the absolute value. The sign can be used to 
check the sign of the power supply.

ecDI_B_Target

and the approximate current setting:
This is unsigned.

ecDI_I_ApproxTarget

If they find a location for the SHMS Dipole NMR, B & I values will be 
provided.

And for reference the desired spectrometer momenta are:
These are signed.

HMS_Momentum
SHMS_Momentum

Cheers,
Mike


More information about the Dsg-hallc_controls mailing list