PSI status report for MuCap conf. call Tues., June 14

[Claude Petitjean <claude.petitjean@psi.ch>]

Dear friends,

tonight is inconvenient for me to join the teleconference.
so I give you a short summary of mucap developments at PSI:

- the PSI-tpc is still in the training process, presently in
   5 bar Nitrogen which is conc. signal amplification almost
   equivalent to operation in 10 bar H_2. Yesterday, we have
   for the first time reached the maximum foreseen voltage of
   6.2 kV, but there is still some more training necessary
   including the supply of charges with the Sr90 beta source.

   After stable operation with betas over several days, we will
   eventually switch to 10 bar protium and do the same procedure
   again.

- one week ago, the CHUPS crew (Sasha, Peter II and Marat) came
   to PSI and started the improvement program on CHUPS. There
   will be 2 new massflow controllers, 2 puffer volumes, an
   improved control & operating system, and many other smaller
   improvements installed. In the present week the system will
   get ready for extended pumping and then protium gas filling.
   Weeks nr. 3 and 4 are foreseen for long-time operation tests
   and for humidity tests with the "PURA" sensor on order.

With best regards

Claude