| Cryogenic Distribution Network | CRYODACS |
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liquid helium to all beam line cryostats by using four valve boxes. Except the field joint section, the entire distribution line of approximately 40m length is liquid nitrogen shielded, multilayer insulated and enclosed in a vacuum jacket of 8" diameter. The mea -sured average heat load is less than 1W/m out of which 60% is contributed by the valves vacuum brakes and the uninsulated portion of the line. |
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acquisition and control system(CRYODACS). All the datas from helium compressor helium liquefier, beam line cryostats and cryogenic distribution line are brought into cryogenic control room through a 1000MBPS ethernet connectivity to minimize the cabling. The hardware architechture of CRYODACS are VME bus with VxWORKS through WINDOWS2000 server host OS. Several clients inder Windows operating system linked by NSC LAN. |
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| a. An arc-cell based helium purity measurement
system has been developed to
measure ppm level impurity . b. A test set-up has been made to study the performance of the Multi-Layer insulation (MLI). c. The thermal conductivity measurement set-up for the cryogenic material is under development. |
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PHOTO GALLERY
1. Piping network and valves inside the LHe Valve box 2. Inside view of Valve box after putting MLI 3. Inside view of the Valve boxes with Copper shield 4. Linac Cryostat integrated with distribution network 5. Cryo-Control Panel |