From: Dave Cockerill
Sent: 17 April 2008 17:56
To: Dave Cockerill; 'Camanzi, B (Barbara)'; Martin Torbet; 'Noviss, J
(John)'; John Arthur Hill; Ken Bell; Werner Lustermann; Botjo Betev
Cc: b.camanzi@rl.ac.uk; c.h.shepherd-themistocleous@rl.ac.uk; Bob Brown
Subject: RE: Phone meeting on the EE HV distribution system - Thursday
17th April at 10h00 local UK time.

Importance: High


Draft minutes - comments welcome - Dave.

1) SHV bulkhead connectors (3x2=6 per crate)
   Agree to be mounted on HV dist crate chassis and not on input cards.
   Input card to have D connector to link to SHV entries 

2) Output card - the 24 HV coax screens
   Agree - via lug and captive screw to back panel/chassis
   ACTION  John Noviss to give 3D mechanical view for next discussion
   Agree - All these screens themsleves to be inside a metal screen

3) Output card - the 24 HV coax screens
   Currently brought together to a single 1kohm resistor and then to chassis
   DISCUSS next time

4) Screen on LV cables to power box
   Comments - short distance - screen not needed 

5) Screen on HV cables on output card or on distribution rail inside chassis
   Comments - screen not needed

6) Agreed: the new grounding of front panels, of cards, to chassis described today
   ACTION  John Noviss to provide zoom in views

7) Low Voltage supply
   Agreed - to be based on linear, not switching, supplies
   1 for each end of CMS + 2 spare (labs etc)
   Agreed Martin to produce one LV supply as soon as possible

8) Current monitoring
   Involves an internally switching isolation amp
   Current prototype 1 - Martin has sen 1V noise - but much reduced with a filter to <10mV
   Agreed NOT liked
   Agreed to look on Prototype 1 and then discuss

9) PVSS to drive EE CAEN crate in 867
   Agreed - could be useful but not top priority

Dave.

-----Original Message-----
From: Dave Cockerill
Sent: 11 April 2008 09:06
To: 'Camanzi, B (Barbara)'; Martin Torbet; 'Noviss, J (John)'; John Arthur Hill; Ken Bell; 
Werner Lustermann; Botjo Betev
Cc: b.camanzi@rl.ac.uk; c.h.shepherd-themistocleous@rl.ac.uk; Bob Brown
Subject: Phone meeting on the EE HV distribution system - Thursday 17th April at 10h00 local UK time.
Importance: High

 
Thanks Barbara.

Werner, Botio,

could we invite you to join us for this discussion? You would both be most welcome - Dave

-----Original Message-----
From: Camanzi, B (Barbara) [mailto:B.Camanzi@rl.ac.uk]
Sent: 10 April 2008 19:17
To: Martin Torbet; Noviss, J (John); John Arthur Hill; Ken Bell; Dave Cockerill
Cc: b.camanzi@rl.ac.uk; c.h.shepherd-themistocleous@rl.ac.uk
Subject: Phone meeting on the HV distribution system Thursday 17th April at 10h00 local UK time.

Dear All,

As in the subject line, the phone meeting on the HV distribution system will take place on
Thursday 17th April at 10h00 (am!) local UK time. RAL office for people at CERN. For people at
RAL can I volunteer John Noviss to provide his office as usual and Martin to bring the speaker phone?

Many thanks,

Barbara