Initial discussions of proposals to provide open CARME chamber and provide access to near and far detector chambers

We assume that we need to complete all work installing and testing DSSSDs and re-assembling CARME by Feb 2022 in readiness for bakeout. 




Proposal #1

Disconnect far detector chamber section from mid-chamber section
Disconnect DN350CF flange from near detector chamber 

Crane to support near detector chamber and mid-chamber sections

Remove feet of near detector chamber and mid-chamber sections

Install cradle(s) beneath near detector chamber and mid-chamber sections

Use for fork lift to remove cradle(s) + near detector chamber and mid-chamber sections - ML confirms that an appropriate fork lift is available 


Proposal #2 (suggested by ML)

Design and fabricate table plus rails to extend transverse rails of CARME chamber support assembly
The CARME chamber support assembly comprises the 'feet' plus two-stage welded Al frame 

Disconnect far detector chamber section from downstream section
Disconnect DN350CF flange from near detector chamber 

Slide CARME chamber plus upper stage of Al support frame transversely onto table

Use crane to move CARME chamber to work area


Other discussions

Discussed workarounds to enable install of FEE64s (outside ring, upper feedthrough) which currently conflicts with longitudinal beam of gas jet target support frame.


To Do

Edinburgh

- investigate feasibility of proposal #2
- investigate how much space is required to install FEE64s (outside ring, upper feedthrough)
  e.g. by extension of transverse beams of gas jet target support frame, move current assembly outwards from ring c. 20-25cm


GSI

- investigate feasibility of gas jet target support frame changes outlined above e.g. movement of gas/water services, purchase of longer cross beams etc.


Suggest meeting (online) to discuss results of these investigations and continue discussions w/c August 22