[Tgun] [New Logentry] T-Gun: HV Procesing, Stop, Radiation

[mstefani at jlab.org]

Logentry Text:
--
All the PSS trips today were caused by high radiation doses detected by "rad211_p3" between 110kV and 118kV.

Unsure of its location, but it is possibly the detector above the control racks where we sit...

Fig 2&3 shows radiation monitors on the gun and beamline are very stable as volatges increase and vacuum was also very stable. 

We have decided to stop HV procesing to make sure operators are safe from detected radiation levels and/or to increase the trip limit as it is preventing any progress.

On a possive note:
After every trip, the voltage was recovered quickly and uniformaly without any dramaitc changes in radiation or vacuum levels. so processing up to 110 kV appears successful. We just need to address this issue to push the system a little farther.



---

This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3718192
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/tgun/attachments/20190812/99d551ec/attachment.html>