[Halld-controls] Comments on HV control for BCAL

[Elton Smith]

Hi Nerses,

I have been compiling feedback on the BCAL HV control

1. Would like to highlight the channel that has been selected. At the 
moment the channel number is displayed, but it would be nice to have a 
visual clue to point to the selected channel
2. The "show bias channels" window will not allow the voltage to be set 
above 70 V. The "set bias channels" window does not have this restriction.
3. The histogram display of the current is not operational
4. In the "set bias channels" window the measured temperature seems to 
display the measured voltage.
5. The "red" status on the overall display will remain ON even if some 
of the HV channels are on. The status will only turn green if all four 
HV channels from a given module are all on. For example, if one of the 
four HV channels from one module is off, that module will show "red". 
However, it is good to be able to look at the overall display and see if 
ANY channels are on. We may need to add another color, e.g. orange, that 
would show that some of the HV channels are on.

* Finally, the issue of some channels staying at zero volts, even if the 
set voltage is 75 V. Yesterday I found this problem for BCAL module 13, 
which is a completely different HV module from previously identified 
module. I will continue to debug this; in the previous case, the 
channels were cleared when we unplugged the IPOD crate and rebooted the IOC.

Thanks, Elton.



Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave STE 16
Newport News, VA 23606
(757) 269-7625
(757) 269-6331 fax