Preparation of the order of the first cryotrap, 
Cascina, Tuesday 5 Oct from 9h in the morning.


_ specifications for UHV cleaning
  -------------------------------
  cctp and docs virgo pipe as example 
  procedure: can clean the parts only before assembly, and maintain cleanliness during assembly

  
_ definition of acceptance tests at the company
  ---------------------------------------------
  experience on uhv vessels of the company
  in case , small chamber as sample?
  He leak test contractual, RT and cold
  outgassing test, with RGA, normally not contractual
  cleanliness  
  cryogenics: consumption and bubbling not contractual 

_ dealing with safety regulations: Frederic
  -----------------------------------------
_ legal obligations
_ regulations imposed by EGO

_ additional constrains:
  ----------------------
  X-ray of all welds?, etc.
  design pressure of aluminum tank
  Piero

_ installation procedure, mech tolerances and flanges design
  ----------------------------------------------------------
  surveys to be made, after VSR3, end Oct.
  shaped holes on which flanges?
  double viton on valve/trap flange
  feet 

_ gasket selection
  ----------------
  cefilac helicoflex type hnde, double viton

_ some details of the suspension system
  -------------------------------------
  discussion on cryotrap suspension system with the 'local' experts on 15Jul
 P.Rapagnani, P.Ruggi, I.Fiori there is agreement on the conceptual scheme of the suspension design.
It is important the estimation of the spring rate and of the viscous losses coefficient for each degree of freedom.
The quote is already given for the vertical direction (Q factor around 30 and a characteristic frequency around 3.5Hz), 
that seems acceptable. Could you provide a rough estimation also for the remaining degrees of freedom?

System to 'FIX' the aluminum vessel


_ firing treatments
  -----------------
  do it?  (also for links and valves?) oven at cnim, on sheets? by us with tapes?


_ baking
  ------
  reuse virgo material to save money? should to test the ultimate pressure. To be done in factory?


- details of drawings
  -------------------
  LN2 inlet pipe


_ documents for the tender
  ------------------------
  what is included in the first cryotrap?
  maybe in a second step: electronics for cryo (level, temp and pressure sensors specifications)
  documents preparation


_ milestones and schedule
-------------------------
when on virgo site?, LN2 interface