==== How to ramp the high voltage ==


=== Ramp detector HV ===


== ramp Detector HV up: == 
1) check that HV on ISEG is ramped up to 500V; IF NOT, RAMP UP (SEE BELOW)

2) ramp up detector HV:

in workspace "Apfel+HV" find terminal Ramp HV:
<code>
agmaas@prima-daq1:~/repo/hv_control$ python3 ramp_hv.py -f /data/data_raid/prima_may_25/hv_scan_2/ -x /home/agmaas/Data/beamtime_May2025/hv/exclude_channels.dat -id all -off 0
</code>

2b) if half of submodule 32 needs to be ramped down, use the alternative exclude file:

<code>
agmaas@prima-daq1:~/repo/hv_control$ python3 ramp_hv.py -f /data/data_raid/prima_may_25/hv_scan_2/ -x /home/agmaas/Data/beamtime_May2025/hv/exclude_channels_sub32high_off.dat -id all -off 0
</code>


== ramp Detector HV down: ==

1) ramp down HV on APDs
<code>
agmaas@prima-daq1:~/repo/hv_control$ python3 ramp_hv.py -val 0 -id all
</code>
if the last line of the output is a 1 repeatedly, you can stop the terminal "Crt+c"


**--------------------------------------------------------------------------------------------------------------------------------------------------**


=== Ramp ISEG HV ===

== ramp pre-HV (ISEG) up: ==

1) **check that detector hv is off**

2) use web interface (tab should be open in firefox already)

IF NOT: http://hadanapc2:8081/dcs/iseg-hv

3) for modules 5 to 9, click checkbox "select all" and click "switch all <on/off>"


== ramp pre-HV (ISEG) down: ==

1) **check that detector hv is off**

2) use web interface (tab should be open in firefox already)

IF NOT: http://hadanapc2:8081/dcs/iseg-hv

3) for modules 5 to 9, click checkbox "select all" and click "switch all <on/off>"



  

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