ITW and TM1 winter shut down vacuum leak check had been finished yesterday.All ITW primary vacuum vessel, secondary vacuum vessel, and TM1water lines had been leak checked.No any leak has been found .The ITW and TM1 are both leak tight.Some detail information below:

TM1 and ITW primary vacuum vessel and water lines:   The leak detector was hooked on BV2 after TP2.  Calibrate leak detector.leak detector BL 0.0xe-9atm.cc/sec,BP0.0xe-4 torr.

Sprayed helium to all primary vacuum vessel seals, flanges, turbo pumps,gauges, blank offs, bellows, and insulation blocks on TM1 and ITW. No any response had been found on leak detector.Also applied 60 psi helium to all water lines in TM1 for 5minutes each,no any response on leak detector.The leak rate stayed at 0.0xe-9 to 0.3 xe-9 atm.cc/sec all the time. All waterlines in TM1 are leak tight.

ITW secondary vacuum vessel:the leak detector was hooked on BV4s after TP4.Leak detector BL 0.0xe-9 atm.cc/sec ,BP 0.00xe-4 torr.  Sprayed helium to all secondary vacuum seals which include all bellows, tank to tank flange seals,tank flange to modules seals,beam diagnostics, gauges,turbo pumps, and EXIT 2 top service cap seals.No any response had been found on leak detector during the check. The secondary vacuum vessel is leak tight on ITW. 

All high vacuum gauges were read at 2-3xe -7 torr range  during the test time and no change during the test.