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The vacuum chuck has 3mm diameter hole for the vacuum line tube (OD/ID=3mm/1.8mm). The vacuum pump at B84 EPP lab is a GAST DOA-P704-AA with max pressure of 4 bar (60 psi). The left port (looking from front) has a 3/8" barb that we intend to connect a braided firm polyurethane rubber tube (McMaster-Carr #51165K12) with ID:OD=3/8":5/8" which runs ~1.5m from below the table to the top of table. This pump vacuum tube then transitions to the short (~30cm) 3mm OD vacuum chuck tube with a pair of Aluminum low-pressure (up to 125 psi) 1/4 NPT adaptor to barbed tube fitting: 3/8" barb - male NPT (with O-ring) on pump side (McMaster-Carr #5058K451); 1/16" barb and female NPT on module side (McMaster-Carr #5058K641). The 1/16" (1.59mm) barb is a approx match to the vacuum chuck tube with ~1.8mm ID (adequate tightness to be verified).
| GAST DOS-P704-AA | Left pump port with 3/8" barb |
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Dry Air
| The dry air filters were saved by Matt from BaBar, residing inside the curtained area of B84 EPP lab. House compressed air are filtered to let out through the flow meter with a max flow of 20 ft3/min. A 80ft long hard polypropylene tubing with 1/4" OD (McMaster-Carr #9349T2) takes the drive air down to the ATLAS benches. The dry air supply tube terminates at a diverting valve (no shutoff) (McMaster #45165K42) on the bench to allow the switching of the dry air between a test port and the through path to module cooling unit. The through path continues with the same type of tube to transition to the 30cm long dry air tube into the module cooling unit which is an ID/OD=1.8mm/3.0mm blue tube from CERN shipment (same as the vacuum tube).This transition uses a similar strategy as the vacuum tubes, with a pair of Aluminum low-pressure 1/4 NPT adaptor to barbed tube fitting: 1/4" barb - male NPT (with O-ring) on supply side (McMaster-Carr #5058K451); 1/16" barb and female NPT on module side (McMaster-Carr #5058K641). |
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Peltier
- Peltier: 4 sets to be tested:
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