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    User name rwright

    Log entry time 17:25:26 on June 30, 2010

    Entry number 329218

    keyword=Magnet Interface to FSD Readiness

    IOC Reboots did not immediately proceed as smoothely as expected. Numerous problems, from duplicate names in the software files to a bad FSD card, were root causes to problems with the Septum interface. With assistance from Ed Stitts, George Lahti and I were able to get systems properly running and checked out. Ron Lauze oversaw check out that we were able to complete using a DVC-350 power supply provided by Ed Stitts. The interface from the "Big Box" to the FSD Analog I/O card is in place using BNC to LEMO connection. The supply was not on, so check out was NOT done with a signal from the "Big Box". DC Power has previously checked out this instrument.

    BM Magnet checked out with minimal challenge. We were able to test the FSD interface with the portable power supply previously used with the Septum Magnet interface, as well as with the voltage provided by DC Power group (from the BM Magnet). Simon & Lee helped with this effort. All checked out well.

    George has updated all related FSD Screens. **The BM Magnet is interlocked to the Machine Protection System through the Normal FSD Card on FSD Node BSY_HallA on Bit 8 labeled "BM Magnet (APEX iocsb4)". Adjacent to the label is a button which opens a pop-up window that provides diagnostic information. An voltage is given proportional to the magnetude of magnet current, indicated by the label "Instantaneous". The constant of proportionality for this magnet is one half of the magnet current.

    **The Septum Magnet is interlocked to the Machine Protection System through the 24V Card on FSD Node 1H002 on Bit 15 labeled "SEPTUM Magnet (APEX iochla)". Adjacent to the label is a button which opens a pop-up window that provides diagnostic information. A voltage is given proportional to the magnetude of magnet current, indicated by the label "Instantaneous". The constant of proportionality for this magnet is not known but can be obtained from DC Power group.

    In both cases the maximum voltage the Analog FSD card reads is 10V. OPS will set trip points.