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Argontube Detector design Laffranchi Marco, Meregaglia Anselmo, Messina Marcello, Rubbia Andre’ Bern, 07.03.2006.

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Presentation on theme: "Argontube Detector design Laffranchi Marco, Meregaglia Anselmo, Messina Marcello, Rubbia Andre’ Bern, 07.03.2006."— Presentation transcript:

1 Argontube Detector design Laffranchi Marco, Meregaglia Anselmo, Messina Marcello, Rubbia Andre’ Bern, 07.03.2006

2 Dewar 6380mm 1600mm X 1600mm Picture taken at the ETH Zurich

3 Dewar 250mm 349mm 5615mm 5400mm The LAr vessel has an inner volume of about 265L. Dewar with the LAr vessel inserted contains about 262L. Cut design of the Dewar In red is the inner vessel, in green is the dewar. If we want to extract the inner vessel vertically, we need at least 12m space.

4 Global view CF250 Flange (without feedthroughs) 3 x PE Pillars LEM Field shaping rings (10mm spaced) Greinacher chain 500mm

5 Global view Pillars, Rings and Greinacher. Cathode (not shown) PMT (Electron tube 9357) 100mm 25mm Drift=4473mm

6 Dewar Top View Dewar (D=349mm inside) CF250 Flange (D=305mm) LAr vessel (D=250mm) Field shaper rings (D=120mm x 3mm) 10mm spaced 62mm Greinacher capacitors 45mm 120mm Grooves for the HV and PMT signal cables.

7 LEM+Rings The LEM has a sensitive diameter of 120mm and it is composed of 97 squared pixels of 10mm x 10mm. The pillars have a diameter of 40mm with slits every 10mm. The ring can be fixed by a PE bar screwed on the pillar. The Greinacher has to be mounted as far as possible from the ground. The diodes and connections are not shown. The field shaping rings are placed every 10mm. I.e. 450 rings in total. They can be of stainless steel or copper.

8 Outline A first design of the detector for the Argontube has been presented. The LEM, pillars, field shaping rings, Greinacher chain and PMT has been designed. LEM:D=120mm made of 97 pixels (10mm x 10mm). Field shaping rings: 450 rings spaced 10mm. 120mm inner diameter, 3mm thick. Greinacher chain: it has to be as small as possible in the radial direction. PMT: a single big tube has been designed.


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