LCGT CRYOGENICS
This report details the ongoing progress of cryogenics construction for the LCGT project as of August 4, 2011. Key updates include the status of the low vibration 4K cryocooler units, with one prototype manufactured and performance testing underway at KEK. The report highlights the manufacturing of seven additional units and the anticipated costs. Bidding processes are outlined for cryostat and mirror chamber components, with potential cost reductions discussed. Also included are updates on other expenses related to measurement instruments and machining preparations.
LCGT CRYOGENICS
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Presentation Transcript
LCGT CRYOGENICS Contents of report T. Suzuki Progress of construction and schedule 2011.08.04 LCGT f2f meeting ICRR Kashiwanoha 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 Design Cooling unit for suspension Install at Kashiwanoha
