Re: Kicker overcurrent

[Peter Winter <peter.winter@psi.ch>]

Mulhauser Francoise wrote:

>Another question is related to the over-current protection. If the NEG1
>LED was on, you performed a reset of the box before trying something
>else? I imagine that the answer is yes. 
>
>  
>
The answer is yes.

>Make sure that the next tests you make are done with the pulsed gate
>(1kHz, 1 mus in), such that you are in known conditions and that the
>results can be compare with what existed before.
>  
>
We'll do the tests with the pulsed gate as we ended up with yesterday.

>-----Original Message-----
>From: Michael Barnes
>To: Peter Winter
>Cc: Michael Barnes; Mulhauser Francoise; kammel@npl.uiuc.edu; Brendan
>Kiburg; hertzog@uiuc.edu; michael.barnes@triumf.ca; wait@triumf.ca;
>Robert M Carey; Anatoly Gafarov; rmcnabb@uiuc.edu
>Sent: 29/11/05 17:33
>Subject: Re: Kicker overcurrent
>
>Dear Peter,
>
>You should be looking for strands of wire, carbon tracks, tools left in
>the cabinet, etc. which could cause the breakdown (or in the case of the
>carbon track, show the path of breakdown). The problem is most likely
>near the output of HV1. It could be a problem associated with the output
>connector, deflector plates etc, so may not be readily visible.
>  
>
Things like that we were checking for but could not see anything that 
might obviously cause such a current.

I think we'll have now several tests for tomorrow. I'll go through them 
with Brendan starting with the spare card and then following all ideas 
from Francoise, Mike and Anatoly. Hopefully we'll find the cause. We'll 
give you un update tomorrow.
Thanks a lot for all your thoughts and ideas
Peter