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Krister and Pelle also suggested that a similar system can be custom-made using chassis with microcontrollersmicro-controllers.

ECAL scaler readout

The question was raised by Hovanes and was if the scalers from ECAL will be coming from the FADC250 or the JLab discriminators to be able to prioritize the efforts for EPICS driver developments.

Stepan said that there has not been a final decision to keep or drop the JLab discriminators from ECAL, but he thought that we would gain little by keeping them. Therefore, the  we decide to conside FADC250 scaler implementation in EPICS as a high priority item.

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Beamline

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Krister have not had time to do much work on the beamline controls last couple of weeks.

Stepan needs to have the pair spectrometer magnet controls to be connected to the magnet sometimes next spring.

Stepan also would like to connect the mini-torus power supply to the old pair-spectrometer magnet since the cables are already there. Also he would like to be able to ramp one of the Frascatti magnets to 1050A. Krister sais that he will need to check if the cable ratings are sufficient or he may need to use two sets of cables. This tests do not need EPICS and can use front panels of the power supply and the gaussmeter. The Frascati magnet tests are only for short-term, we will not need to go to 1050 Amps during HPS.

Krister mentioned that the Dynfysic rep was here at JLab, and he showed him Hall B pair spectrometer power supply to the rep to see if something can be done regarding the problem with the current bouncing around when the set-point is 0A. The answer was that it was  a common problem and it is possible to fix it by driving 5A or 10A internally. Noone from present people objected to this solution, provided we did not have to pay an arm and a leg for it.