Setting DCCTs

Disclaimer

While the setting of DCCTs is referenced in several procedures, there is no official guideline for what to set them to. The instructions below are just what has somehow become common practice.

Where to Find the DCCTs

FRIB Homepage, Diag Launcher, Under “Engineering/Expert Pages”, DCCTs

here

Current practice

Currently operators are setting the DCCTs using the following steps:

Disarm DCCT, note the magnet setpoint

Set the negative and positive thresholds to 0.2% pf current magnet setpoint

Clear the DCCT alarm, arm the DCCT

Setting the values

Most operators use their phone calculator or their computer calculator to make this calculation, the calculation usually fallows this syntax:

(Current magnet setpoint) * 0.002 = threshold

Links

DCCT Operation instructions

DCCT info page