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E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041

E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041. See slides for more E0’ setup info. E0’ frequently asked questions:. - Is there a sock over the umbilical - if so how connected to chassis. and how far does it extend. Yes – from backplate to preamp box – see slide 2

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E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041

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  1. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 See slides for more E0’ setup info. E0’ frequently asked questions: • - Is there a sock over the umbilical - if so how connected to chassis. • and how far does it extend. Yes – from backplate to preamp box – see slide 2 • - Are the HV earths connected on the filter cards. Tony update please • - If not where and how is earth connection made. Tony update please • Is there an earth connection from the filter cards to the housing. • Tony update please • - What is the resistance between the signal cable sheath and ground when • all connected up. See slide 6. • How is the connection made between the plates in the whole assembly. • See slide 3 – appears to be thru the brass tie rods • - Circuit diagram for filter cards on E0' would be nice. Tony update please

  2. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 Brass supports LV entry SC02 Preamp box Local HV box SC02 only, no SC01. SC02 with umbilical: filitex mini-cable with overall screeninto a Dee type connector and straight into Stephenson Preamp box, no terminator card.Screen appears to be connected to backplate at SC end and to preamp housing at preamp end.

  3. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 LV input to Stephenson preamps HV coax screen to local HV box chassis Chassis bolted to thermal screen plate Screen for LV cables to preamp box Preamp box Brass tie rods connecting all planes

  4. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 HV supply at crate 1 Mohm HVO/P PAG459 RAL 344 100 -150m of CERN HV cable to local HV box on E0’ Nano-ammeter HV P/S Dynode or Anode

  5. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 LV supply Output 1 Output 2 Output 3 (not used) sense sense sense sense - - - - + + + + Gnd Gnd - +6V sense +6V -6V -6V sense retn Screen ofLV cables -6V sense 0V (-6V retn) 0V ‘housing’ +6V sense rtn Into screen sheath, screen to ‘OV’ at P/S and to preamp chassis at other end‘Gnd’ outputs on P/S not used

  6. E0’ setup at CERN, 19.8.03, lab 187-R-D06, via bat 70, tel 77041 Stephenson preamps to ADCs Preamps 00.0 ohms from lemo grounds to screen/sheath, but occasional DVM flicker to 00.2 ohms O/P 25 lemo cables to three 2249 ADCs Insulated screen/sheath around all 25 cables. Screen bolted to cooling plate at preamp box. Screen NOT connected at ADC end.

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