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--- prima_control:how_to_ramp_hv [2025/02/26 11:16] – himuser
+++ prima_control:how_to_ramp_hv [2025/06/03 00:07] (current) – himuser
@@ Line 1: / Line 1: @@
 ==== How to ramp the high voltage ==
-  * ramp HV up:
+=== Ramp detector HV ===
+== ramp Detector HV up: ==
+) check that HV on ISEG is ramped up to 500V; IF NOT, RAMP UP (SEE BELOW)
+) 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_feb_25/hv_scan_6 -x /home/agmaas/Data/beamtime_Feb2025/hv/exclude_channels.dat -id all -off -0
+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>
+b) 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: ==
+) 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: ==
+) **check that detector hv is off**
+) use web interface (tab should be open in firefox already)
+IF NOT: http://hadanapc2:8081/dcs/iseg-hv
+) for modules 5 to 9, click checkbox "select all" and click "switch all <on/off>"
+== ramp pre-HV (ISEG) down: ==
+) **check that detector hv is off**
+) use web interface (tab should be open in firefox already)
+IF NOT: http://hadanapc2:8081/dcs/iseg-hv
+) for modules 5 to 9, click checkbox "select all" and click "switch all <on/off>"
+{{:prima_control:screenshot_2025-02-26_13-08-57.png?600|}}