Memo (draft) of a special meeting, 15th March, 2010
Date : 15th March, 2010, 4pm -
place : Experimental multiple purpose room
participants : S.Mihara, T.Oger, T.Tauchi
Introduction of Tugdual Oger ( Subatech, Nantes, France )
He is a Ph D student in 1.5 years on the 3 year's PhD course, so he will finish his thesis by Nov. 2011.
One major topics will be a next TPC prototype with many pads ( a few mm2 , > 100ch), which is an intermediate one to the third gamma ray detector for the three gamma PET.
His office is 204, 2-gokan, 6235 or 6236, and his PHS phone is 2852.
Different aspects of KEK cryogenics system from Subatech system
- heat exchanger
- getter pump at high temperature ( > 300 ) as NEG pump
Plan for 2 weeks ( 3/15 - 3/26)
- 3/15 Mon preparation of cold parts and cabling inside of the chamber
- 3/16 Tue 9am- preparation of feedthrou connection with S.Mihara
with temporary assembling of chamber
check the cable connection and test pulse performance
- 3/17 Wed final assembling of chamber
start vacuum evacuation for about 5 days
- 3/18-19 Thu-Fri check the electronics system with cold and warm parts
the warm parts will be delivered from the company.
- 3/20 Sat continue the electronics study if needed
, in a case of delivery delay
- 3/21-22 Mon-Tue Vacuum buildup test and liquefaction starts
- 3/23 Wed - measuring scintillation lights for monitoring purity
with the Xe circulation
preparation of data acquisition system
- 3/26 Fri - expectation of first observation of charge signals (cosmic ray)