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    Thirteenth design meeting

    → Europe/Zurich
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    A quick summary of the points discussed today.

    Torsten had contact with Thierry Dupont: helium flow could be lower than 0.5 g/s, also by throttling the return to the gasometer. There is a mass flowmeter on the return, not yet on the PLC, to be seen if it is in common with FRESCA2. There is a safety valve on the cryostat, settings to be verified.

     

    Emiliano has implemented a larger phase separator as discussed last time. Spacing between vacuum envelope and separator to be increased to allow accommodating MLI. Line for level gauge to be implemented (8mm diameter, tbc). Vacuum pumping line DN25 KF. To be discussed with Luca if it makes sense to have a flange at the bottom of the vacuum envelope. Thermal shields are also implemented, aligned between outer and inner part of the cryostat.

     

    Kristof will look for the different type of semi-rigid coaxial lines available, to start introducing in the design, and considering their thermalization.

    Christian Barth suggest to make the insert robust enough to be inserted with the crane (some misalignment to be expected) without any damage. Also the lengths should be such that it can be inserted in the bottom, narrow diameter part of FRESCA with some visibility for the operator.

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