Re: telephone call

["Alexei Vorobyev" <Alexei.Vorobiev@cern.ch>]

Dear Peter,
Unfortunately, I shall be outside of CERN tomorrow afternoon.
So please call me on Wednesday (after fixing time by mail).
For the beginning, I shall try to summarize the status and plans at PNPI.

1. ePC.
    We are prepared to send two people  (  Andreev and  Fetisov ) for two
months,
     as we agreed before.In addition, Anatoly Krivshich will come for a
couple of weeks.
     Taking into account the 5 weeks delay ,the starting date might be May10
(please confirm)

2. New TPC
   The plan is to have the new TPC by the August run.
   This is a very difficult task but I hope we shall manage with the help of
our colleagues.
    .

3.  Gas circulation system
      We expect it to be constructed in May /June and  will be under tests
since July.
       In our opinion, we shall not use it in the August run . One reason is
the limitations
       in our visiting budget. So it would be better to perform the complete
tests of this system
       at PNPI  till the end of this year.

4   Participation in the May run.
     At least, Gena Petrov will be at PSI  in May-June (He will help also
with ePC)
     Maybe one one of our physicists  will come as well  (question of money)

5.  Participation in the August run
     We plan to concentrate on this run spending most of our  resources
      Seven persons for about two months ( Gest house and tickets being
provided by PSI)

6. Depleted protium.
    This work has been started, One column was put into operation.
    First it was flushed for several days. Then it was operated in a regular
way during
    only five days  and produced 9 liters of the 30 ppm protium water.
    Then it was refilled with  fresh water and put into operation for longer
period (10-15 days)
    We shall see soon the results.  Meanwhile they will try to improve the
sensitivity of the
   measuring device to - 1ppm level (10 ppm at present).
    At least,one thing is clear already: we shall have enough depleted
protium for tests of the circulation
    system  in May.  But  the work will be continued according to the plans
I have described before
    with the hope to produce the 1 ppm protium water and then to use it in
the new column
     (H2O (water)-H2 gas exchange) to  reach 0.3 ppm gas in our TPC.
     In an optimistic scenario, this might happen by the end of this year.

7. Complete tests of the fully equipped TPC/gas circulation/protium
depletion /gas analysis systems
     We would like to perform such tests at PNPI starting in the beginning
of the next year.
     For that we shall need an oil-free pumping system. The most expensive
is the fore-vacuum pump.
     We are investigating various possibilities to  get such system.

































----- Original Message -----
From: "Peter Kammel" <kammel@npl.uiuc.edu>
To: "Alexei Vorobyev" <Alexei.Vorobiev@cern.ch>
Cc: "Claude Petitjean" <claude.petitjean@psi.ch>
Sent: Monday, March 17, 2003 3:54 PM
Subject: Re: telephone call


> Dear Alexei,
>
> Unfortunately I cannot make it today, because of several meetings.
> I have asked Claude, whether he has a simple and inexpensive
> way to get a tel number, which we can all call tomorrow. If not
> I will call you directly at CERN.
>
> Also I hope to have a better estimate of the ePC schedule by tomorrow.
>
> Talk to you soon.
>
> Peter
>
> On Mon, 17 Mar 2003, Alexei Vorobyev wrote:
>
> > Dear Peter and Claude
> > I am at CERN now. I would suggest Peter to call me  to 767 9052
> > for example today at 6 pm Geneve time.
> > Then we shall decide if we need the audioconference (more expensive)
> >                                     With best regards   Alexey
> >
>
>
>