[Esr-users] Warm return pressure HMS dipole tripping off

[Steven Lassiter]

Hi,



 The warm return pressure, as monitored on CPI603QC, has fluctuated three times over the last few days. When the pressure rises, it has resulted in the HMS Dipole current lead flow to drop below its minimum threshold level (at a given current) long enough to activate the fast discharge interlock.


Any ideas on what is causing the warm return pressure to behave badly?


The dates were  (depending on daylight saving clocks on systems)

3/29/2019 ~3:15pm

 3/9/2019 4:41pm

4/2/2019 5:11 pm


The dipole also tripped off again 4/2/2019 around 7 pm but this was not due to lead flow. PSU interlock (maybe linked to low 480Vac supply voltage)


Steven




[cid:d25bd89c-be83-4a05-9ff4-3f1f3fc9c02e]
[cid:febb4c00-150b-4be8-9afe-2044847e874b]
[cid:69365042-a85f-45f1-8cc8-13f78fd8a6aa]

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20190403/968f7d6e/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HMS-Dip-#1.JPG
Type: image/jpeg
Size: 169951 bytes
Desc: HMS-Dip-#1.JPG
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20190403/968f7d6e/attachment-0003.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HMS-Dip-#2.JPG
Type: image/jpeg
Size: 180969 bytes
Desc: HMS-Dip-#2.JPG
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20190403/968f7d6e/attachment-0004.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HMS-Dip-#3.JPG
Type: image/jpeg
Size: 174149 bytes
Desc: HMS-Dip-#3.JPG
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20190403/968f7d6e/attachment-0005.jpe>