From: Alexandre Nikitenko
Sent: 10 January 2002 11:15
To: Dave Cockerill
Cc: Chris Seez; David Barney; Bruce Kennedy; Dave Cockerill; J
Greenhalgh; Philippe Bloch
Subject: RE: EE position (fwd)

sorry, it was my missprint "370.2" below. should be 317.2 Sasha.  


On Thu, 10 Jan 2002, Alexandre Nikitenko wrote:

> Dear DaveC,
> 
> thanks for this clarification. Now we have to decide where to start 
> endcap volume in CMSIM. Since Philippe and DaveB confirmed that presh.
> envelope end at Z=316.8cm we have two possibility for CMSIM :
> 
> 1. EE volume start Z = 370.0 cm, gap between presh. and EE  0.2 cm
> 
> 2. EE volume start Z = 370.2 cm, gap between presh. and EE  0.4 cm
> 
> 
> Cheers, Sasha.
> 
> 
> On Thu, 10 Jan 2002, Dave Cockerill wrote:
> 
> > 
> >  We have lost NOTHING !
> > 
> >  The ENVELOPE for EE starts at 3170 mm, see Fig 3-5 of the EDR.
> > 
> >  The PHYSICAL start of the EE (ie the screen) is at 3172 mm,
> > 
> >  ie 2 mm clearance with respect to the defined envelope.
> > 
> >  Please be careful with your terminology !
> > 
> >  Dave.
> > 
> > -----Original Message-----
> > From: Chris Seez [mailto:Chris.Seez@cern.ch]
> > Sent: 10 January 2002 09:44
> > To: Alexandre Nikitenko
> > Cc: Dave.Barney@cern.ch; Bruce.Kennedy@cern.ch; Dave Cockerill
> > Subject: Re: EE position (fwd)
> > 
> > 
> > Sasha: that's fine.
> > DaveC: seems you just lost 2mm from what you believed to be endcap 
> > volume.
> > 
> > Chris.
> > 
> > 
> > On Thu, 10 Jan 2002, Alexandre Nikitenko wrote:
> > 
> > > Hi,
> > >
> > > Philippe Bloch confirmed that :
> > >
> > > 1. end of presh. envelope Z=316.8cm
> > >
> > > 2. start of EE envelole Z = 317.2 cm.
> > >
> > > so, we have a gap 0.4 cm. between presh. and EE.
> > >
> > > I am going to update tz files with these numbers. (Present numbers are :
> > > EE start at 317.0 cm. and zero gap between end of presh. and EE).
> > >
> > > Please, confirm today that you agree on that, so with coming today 
> > > Bruce's EE correction we may have full ECAL ready by today night.
> > >
> > > Cheers, Sasha.
> > >
> > >
> > > ---------- Forwarded message ----------
> > > Date: Thu, 10 Jan 2002 09:10:45 +0100
> > > From: Philippe BLOCH <>
> > > To: Alexandre Nikitenko <Alexandre.Nikitenko@cern.ch>
> > > Subject: Re: EE position
> > >
> > > Sacha
> > > Happy new year to you too !
> > > I checked with our engineers. Your information is correct.
> > >
> > > Cheers
> > >
> > > Philippe
> > >
> > >
> > > Alexandre Nikitenko wrote:
> > > >
> > > > Dear Philippe,
> > > >
> > > > Happy New Year ! As we discussed in Moscow, could you, please to 
> > > > help me to clarify the current presh. and EE positions. I would 
> > > > need the following :
> > > >
> > > > end of preshower envelope in Z
> > > >
> > > > start of EE envelope in Z
> > > >
> > > > accorind to my present understanding the end of presh. envelope
> > Z=316.8cm
> > > >
> > > > start of EE envelope Z = 317.2 cm. Is it correct ?
> > > >
> > > > thanks, Sasha.
> > >
> > > --
> > > Philippe Bloch
> > > CERN EP Division
> > > Tel: 41 22 767 8636  or GSM: 41 79 201 3647
> > > Fax:  ======== 8930
> > > Sec   ======== 3433 (local)
> > > Sec   ======== 2277 (CMS secretariat)
> > >
> > >
> > 
> > 
> 
>