1. 1 Hypertronics connectors at VMTF L series modular Hypertronics connectors in use at Fermilab/VMTF since fabrication of the LHC IR quadrupoles More than decade of reliable work at superfluid temperatures Insulator: Diallyl-Phthalate (DAP) 3 different types of connectors are used at VMTF: o 2-pin connectors for heaters o 17-pin connectors for strain gauges o 5-pin - for CVT and FVT Current rating: 8 A Contact Life Cycle:> 100 000 Breakdown voltage: > 2000 V RMS More details here: http://www.hypertronics.com/en/Products/Modular-Connectors/L-Series.aspx

2. 2 Hypertronics connectors at VMTF FVT/Heater connector Spot Heaters Strip/Protection Heaters FVT

3. 3 Voltage breakdown tests 5-pin FVT/CVT connectors were tested in Helium gas and air: o Breakdown voltage of 900-1600 V reached in Helium gas* o Successfully tested up to 3500-4000 V in air*. *Kapton insulator in between the modules significantly improves the breakdown voltage Not tested in liquid Helium Need to specify increased Hipot voltage in functional requirements for the QXF magnet test at Fermilab