Re: vme crate

[Brendan Kiburg <kiburg@npl.uiuc.edu>]

Ok, we'll have plenty to do with other things since the crate arrived
today.  I know that Claude was trying to organize a meeting with Johny
Egger concerning the TPC, and doesn't want to make an announcement before
that meeting, but it seems the solution is inevitable, so I was hoping
they would start implementing it.  See you Friday.

Regards,
Brendan

On Wed, 29 Mar 2006, Peter Kammel wrote:

> Dear Brendan,
> 
> Conc the VMW Crate, please talk to the electronic pool. You can
> also point out that this is an emergency, perhaps they can
> repair the power supply of the existing crate.
> 
> I would wait with the chambers until the crate is fixed. Usually
> going to 2000V is trivial and not time consuming. After that
> it is an advantage to have the monitor on.
> 
> The TPC is a problem. I might call Claude tonight, otherwise I
> am there on Friday.
> 
> Regards
> 
> Peter  
> 
> On Wed, 29 Mar 2006, Brendan Kiburg wrote:
> 
> > Hi Peter, 
> >  The VME crate in the barrack (with the CAEN) seems to have a faulty power
> > supply.  This leads to two immediate questions.
> > 1) Do we have any spare crates available, or do we need to ship
> > more?  Should we just go talk to the pool?
> > 
> > 2) Without this crate, I can't run the DAQ.  Fred should be here Thursday
> > and we'll either have a new crate or he might be able to work around
> > it.  Should I put the chambers on a moderate (no gain) voltage and simply
> > monitor the current until I can look at the wire distributions, or should
> > I wait entirely before putting any voltage on them?
> > 
> > As a side note, Claude and Malte both indicate the detector group is quite
> > busy with MEG stuff so they are still trying to arrange a meeting to
> > discuss the TPCs future.  It seems they plan on leaving the TPC on HV
> > through the end of the week and weekend, which indicates to me they don't
> > plan on leaving the hall until a few days before the run starts.  The TPC
> > needs attention and given the previous timescales associated with
> > repairs, it seems to me we can't just wait a week and assume that it will
> > be back within 2-3 weeks.  I don't have any particularly diplomatic ways
> > to encourage progress on this issue.
> > 
> > Best Regards,
> > Brendan
> > 
> > 
> > 
> 
> Peter Kammel  /  pkammel@uiuc.edu
> Department of Physics, Loomis Laboratory
> University of Illinois at Urbana-Champaign
> 1110 West Green Street, Urbana, IL 61801 
> Tel (217) 333-5424 / Fax (217) 333-1215   
> 
>