1. MQXFS01 instrumentation, Projecting towards MQXFA D. Cheng, S. Myers, H. Pan, X. Wang 10/14/20151

2. 2 Instrumentation 210/14/2015 Three main instrumentations Voltage tap (VT) (including FVT) Protection heater (PH) Strain gauge (SG) Quench antenna not covered here For each type of instrumentation, we have four main components Connectors on the coil/component level Collectors/distributors at magnet lead and return ends Jumpers between lead and return ends Pigtail between lead end and test facility (lambda plate) We will review the case for MQXFS01 and provide projections for MQXFA01

3. 3 MQXFS01 voltage tap 310/14/2015 16 taps per coil, 8 taps per layer 64 taps in total In each layer, 6 taps from the lead end and 2 taps from the return end Wire: 30 AWG with Kapton/Tefzel insulation Same for MQXFA

4. 4 MQXFS01 protection heaters 410/14/2015 6 heater strips per coil, 2 in inner layer and 4 in outer layer Same for MQXFA Maximum 6 heaters per coil MQXFS01: 4 heaters per coil (configured 2 heater circuits for outer layer, due to FNAL limitations) 16 heaters in total Wire: 16 AWG with Kapton/Tefzel insulation Heater configuration TBD for MQXFA Inner layer: 2 strips Outer layer: 4 strips

5. 5 MQXFS01 strain gauges 510/14/2015 Coils: LARP: 1 station per coil, azimuthal (T) + TComp. and axial (Z) + TComp., 8 wires/coil, 32 wires/magnet CERN: 1 station per coil, 5 wires per T&Z, 10 wires/coil, 40 wires/magnet Shell: 1 shell with 4 stations, azimuthal (T) + TComp. and axial (Z) + TComp., 32 wires per magnet CERN: 4 stations, 5 wires per T&Z, 40 wires per magnet Rods: LARP only: 1 gauge per rod, not temperature compensated, 4 wires per rod, 16 wires per magnet Current proposal for MQXFA (LARP/CERN) will triple: Three stations per coil (24/30 wires/coil, 96/120 wires/magnet) Three shells to be instrumented (96/120 wires per magnet) Rods will stay the same, 16/20 wires per magnet LARP Wire: 4-wire shielded cable, 30 AWG (Vishay 430-FST) CERN Wire: 30 AWG with Teflon (Nexans KZ04-02)

6. 6 MQXFS01: other wiring 610/14/2015 Cooling-hole jumper to bring the signals from the return end to lead end Contained in one of the four cooling holes that is expected to be compatible with MQXFA (along with BNL LHe fill tube) Fixed voltage tap (FVT) for quench detection Whole magnet ¼ magnet, ½ magnet, and ¾ magnet These wirings are done at the splice box Wire: 30 AWG with Kapton/Tefzel insulation Pigtail to bring the signals from magnet to FNAL lambda plate FNAL provides the definition on connector type, layout and pinout Power-lead wire for monitoring the NbTi lead quench A pair of wire following the positive and negative lead from the NbTi/Nb 3 Sn splice to FNAL header Wire: 30 AWG with Kapton/Tefzel insulation

7. 7 MQXFS01 skirts 710/14/2015 Platforms with interface connectors at both magnet ends

8. 8 Connector layout at MQXFS01 return end 810/14/2015 PH distributor Coil collector VT distributor

9. 9 Connector layout at MQXFS01 lead end 910/14/2015 SG distributor VT distributor

10. 10 Possible issues for MQXFA 1010/14/2015 Connectors used all space on the skirt at the lead end for MQXFS01 More SG connectors are expected for MQXFA Connector oriented toward the aperture for MQXFS01 The pigtail has little room to bend and access the connectors on lead end skirt Both issues have to be addressed for MQXFA Splice connection box will be mounted closer to the axial endplate MQXFA MQXFS1

11. 11 MQXFS1, viewed from LE 1110/14/2015

12. 12 MQXFS1 Lead End 1210/14/2015