WA105 General meeting CERN – 21 January 2015 Feedthroughs for the 3x1x1m 3 Franco Sergiampietri ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology 1

Required feedthroughs: -Ionization charge readout -Slow control and calibration -HV for drift -Anode deck suspension (LAPP) -Cryogenics and gas handling (Shuoxing) -Cryogenics and gas handling (Shuoxing) ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/2015 2

Ionization charge readout chimneys ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ D:219.1x215.1mm top cap crossing tube, welded to the top and bottom SS plates, with CF295 on top Acquisition Electronics MicroTCA Crate Top flange (CF253): pressure transducer, vacuum port, overpressure valve ~1.2 m thick top cap insulation Back flange (CF152): LAr heat exchanger, N 2 flushing ring D:204x200mm chimney tube, with CF295 on top Side flange (custom) for warm SFT Bottom flange (custom) for cold SFT Pair of 0.5mx0.5m CRPs (total number = 12) Details in the presentation on the WA105 General Meeting, October 16, 2014

Charge readout chimneys – Vacuum test of the SFT pcb ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Vacuum tightness tested with He leak detector: < Atm·cm 3 /s (end od scale) (Helicoflex gasket + indium to compensate the 0.1mm non planarity of the multilayer PCB)

Warm SFT – Version 2 for directly inserted ADC cards ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Plug KEL MS-A-F matches with Receptacle KEL L-F Plug KEL MS-A-F matches with Receptacle KEL L-F

Fake FE electronics card (5 pieces) for SFT chimney test (continuity from warm−to−cold SFT). Ordered. ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Plug through hole 90° KEL 8931E L-F Receptacles though hole 90° KEL L-F Plug through hole 90° KEL 8931E L-F

Charge readout chimneys – Status -1 st chimney ordered to Scientific Instruments CINEL (Padua, Italy). -Ready. Next week expedition after a final control visit. -Test at CERN. -Order for the other 5. ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/2015 7

Slow control and calibration feedthroughs Use: 1 -HV for the extraction grid (3): 3 HV coax.3 LEMO HV 2 -HV bias for the highest (lower voltage) field cage ring: 1 HV coax.1 LEMO HV 3 -HV for LEM top (12) and bottom (12) voltage bias: 24 HV coax.24 SHV 4 -HV for PMTs (3): 3 HV coax.3 SHV 5 -Calibration of the charge readout strips (3x20 channels): 120 contacts1 calib. FT 6 -PMT (3) and Si-PMT (3 optional) signals:6 coax.6 SMA 7 -Capacitive level meters (13):26 coax.26 SMA 8 -Resistive level meters (2x40 4-contacts resistors):320 pin 4 D-Sub 50 pin 9 -LEDs for cryo-cameras (8):16 pin “ 9 -LEDs for cryo-cameras (8):16 pin “ 10 -PTs for CRP (23):92 pin4 D-Sub 50 pin 11 -PTs for cryo-cameras (4):16 pin “ 11 -PTs for cryo-cameras (4):16 pin “ 12 -PTs for PMTs (3):12 pin “ 12 -PTs for PMTs (3):12 pin “ 13 -Strain gauges (24): 96 pin2 D-Sub 50 pin 14 -Heaters in GAr (3) and for cryo-camera(4):14 pin1x20pin FT 15 -Cryo cameras signal/control (2x2)4 USB 4 USB FTs ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/2015 8

Slow control and calibration (SSC) feedthroughs ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ SCC1 SCC2 SCC3 Top SS plate Passive insulation Bottom Invar plate Top cap crossing tubes SCC1 = SCC3 Top cap crossing flange and tube for suspension chimney DN125CF (preliminary) D=32x30mm D=22x18mm

Slow control and calibration feedthroughs ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ SCC2 SCC3=SCC1 Passive insulation Flange DN250CF 5(x2)D-SUB 50 12(x2)SMA 2(x2)HV LEMO 20kV 12(x2)SHV 2(x2)USB Flange DN250CF 1CFT 20 Ch. 120-pin POWER FT 12SMA 12SHV O 2 Flushing Valve Pressure transducer O 2 Flushing Valve Manometer O 2 Flushing Valve Susp. Ch. D=32x30mmSuspension crossing tube D=22x18mm D=32x30mm

60 channels Calibration FT – Gerber files ready. To be ordered. ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Plugs through hole 90° KEL 8930E MS-F 4 layers PCB D=73.8mm x H=4.8mm Metal joint CEFILAC HN100 -H 15035

Slow control feedthroughs ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Next steps: 1.Verify and buy all the weldable feedthroughs. 2.Finalize the drawings for the 3 DN250CF flanges. 3.Verify and decide on the choice of cables (custom, KAPTON, …) and on where they will be assembled. 4.Order the flanges with welded components. 5.Final test at CERN.

HV feedthrough for drift in the 3x1x1m 3 ETH Eidgenössische Technische Hochschule Zürich Swiss Federal Institute of Technology Franco Sergiampietri 21/01/ Main purposes: 1.1Generate the drift field for the 3x1x1m 3 ( kV/m) with 100kV power supply (possible with existing FT). 1.2Possible electrical rigidity test of LAr at higher voltages with the 300 kV power supply (new FT required). 2. Requirements: 2.1Length ≥ 2.5m, to cross the top cap thickness (1.2m), the Ar gas thickness (0.5m), plus 0.5m immersed in LAr and 0.3m over the top cap plate. Valid for the 3x1x1m 3 and for the 6x6x6m Next steps: 3.1Executive drawings (mainly extrapolated by the existing feedthrough drawings) for the producing company. Required time: ~1week. 3.2Assembling and test at the producing company (*). Required time (confirmed by CINEL) : ≤2 weeks. 3.3Test at CERN-WA105. Adapt the existing test setup and test up to 300 kV. (*) Availability verified at CINEL of long (4m) travel lathe, with ≥ 3m distance to the tailstock lathe and of cryogenic/vacuum facilities.