New Setup for Dart Chamber in ArDM - agenda.infn.it fileDESIGN: 5 x Cu Pillars: 25mm Dia ~5.3Kg per...
Transcript of New Setup for Dart Chamber in ArDM - agenda.infn.it fileDESIGN: 5 x Cu Pillars: 25mm Dia ~5.3Kg per...
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New Setup
for
Dart Chamber in ArDM
30.04.2019
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A. Gendotti, B. Radics, C. Regenfus, Y.A. Rigaut, A. Rubbia, A. Stauffer, T. Viant
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SUMMARY:
• Overview• Top Flange
Design (slide #3 to #10)
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Production Status (slide #11)
Assembly Procedure (slide #13 to #20)
Time Scale (slide #12)
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DESIGN:
5 x Cu Pillars: 25mm Dia
~5.3Kg per pillar
5 x SS rings Vertical Reflector supports:
- SS plate 20mmx2mm
- ~0.8 Kg per Ring
Bottom PMTs Array:- 7 PMTs
4 x Pillars Flange to PMT Array:~1.7 Kg Stainless Steel per Pillar
Top and Bottom insulated with PEEK
Top PMTs Array:- 6 PMTs
- No PMT in Center
PMT Reflector: - PTFE 1.5mm thickVertical Reflector
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Reflector Clamps
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ArDM LAr Level
New LAr Level
Diameter Inside the Reflector
Height between Top
and Bottom PMMA Reflector
3x1x1 Coaxial Levelmeter:
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DESIGN:
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2D Drawings
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1) Pressure sensors + Valve Move to DArT
2) Levelmeter and coaxial Levemeter NO NEED3) PMTs High Voltage NO NEED
4) Gate Valve + Vacuum Pump Move to DArT
5) PMTs Signal Cables NO NEED6) Gas Rec Move to DArT
7) Lar Snorkel Move to DArT8) HVFT NO NEED
9) Not used
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TOP FLANGE
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Gate Valve + Vacuum Pump
Pressure Sensors
Gas Rec. and LAr snorkel
TOP FLANGE
SCFT 1 from 3x1x1
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TOP FLANGE
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Y. RIGAUT, IWG Meet. “ArDM run
II: Weekly report”
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Pressure sensor
7 PMTs
6 PMTs
Capacitive LM
(12 Temperature sensors)
PMTs SIGNAL AND HV CONNECTION
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PMTs SIGNAL AND HV CONNECTION
Y. RIGAUT, IWG Meet. “ArDM run
II: Weekly report”
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DN250CF version currently in application (3m x 1m x 1m)
HV 10kV double ended not use in the
311 due to HV discharges
Here they will be
used for PMTs signal= 1 PMTs signal
12 PMTs signal
12 TTs (temperature)
13 HV connections for PMTs (directly
molded inside dedicated flange)
2 LTs signal (1 level meter)
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PRODUCTION STATUS
• All the material arrived and already in production process.
• PMT PCBs ready for Test in GAr
• PMTs and Disk Reflector need to be coated at CERN
• Vertical reflector foils are already at LSC (old ArDM single phase detector)
• Teflon Reflector
• PE1000 protection for PMTs• Ring Holder for PMTs PMTs PCB
Bottom PMT Holder
Top PMT Holder
Installation Ring
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TIME SCALE
• All parts should be ready by middle of May
• Cleaning
• Assembly of the PMTs Top and Bottom Array at ETH (Minimum 1 Week)
• Prepare for shipping
• Goal Everything ready to ship by the beginning of June 2019.
Assembly Work at LSC:
Not yet planned (estimated 2/3 Weeks of Work)
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ASSEMBLY PROCEDURE
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STEP 1:
• Top and Bottom PMTs array assembled in the clean room (ETH or CERN)
• Packed and Shipped ready for assembly to LSC
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STEP 1:
• Top Flange on the Support Shower
• 4x SS Pillar
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STEP 2:
• Top PMTs array
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STEP 3:
• 5 x Cu Pillars
Comment: eventually simple Bottom
SS ring can be installed in order to keep aligned the pillars
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STEP 4:
• Vertical Reflector supports rings
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STEP 5:
• Vertical Reflector installed from inside
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STEP 6:
• Bottom PMTs array
• Coaxial Levelmeter• Cabling • Cover Top and Bottom PMTs array with Teflon Tape
STEP 7:
• Insertion in ArDM Dewar
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