LCGT f2f meeting ICRR Kashiwanoha

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Presentation transcript:

2011.08.04 LCGT f2f meeting ICRR Kashiwanoha LCGT CRYOGENICS 2011.08.04 LCGT f2f meeting ICRR Kashiwanoha Contents of report T. Suzuki Progress of construction and schedule N. Kimura Status of the cryogenics design Y. Sakakibara Incident thermal radiation through duct shield and cooling time of mirror K. Yamamoto Cryogenic payload

Progress of construction Low vib. 4K cryocooler unit (prototype) Manufactured one unit Performance test in progress at KEK, detail will be presented by N.Kimura. Low vib. 4K cryocooler unit (actual) Manufacture 7 units in 2011fy. Cost may be 33% larger than the initial estimation. Bidding on 9/5, opening on 9/20 Candidate companiess : 4 ? Cryostat /Mirror chamber Machine 4 sets of components and partially assembling. Cost may reduce 46% from the initial estimation by restriction of manufacturing period. Bidding on 9/5, opening on 9/21 Candidate companies : 3 ? Other expenses Purchase instruments for measurement, trial manufacture, preparation of samples, machining jigs, etc

LRIP Manufacture Cooling unit for suspension Design Install at Kashiwanoha