ZSpec NIR Harnesses & Connections#
Scope: the removable NIR assembly, including its EBox, cryostat, feedthroughs, cold wiring, YJ/H/K readout, external CRED2 slit viewer, and coldhead/compressor connections.
Related operations: ZSpec and environmental services. Diagrams: NIR assembly and mechanical-room connections.
Assembly boundaries#
NIR EBox: computer, network, motion/temperature controllers, AC/DC distribution, and heat exchanger.
Cryostat interior: cold-pupil rotator, ADC pair, field rotator, X/Y steering, slit selector, cold shutter, YJ/H/K detectors and focus stages, and thermal sensors/heaters.
Cryostat interfaces: support/motion VIB, detector VIB, vacuum gauge, and automatic gate-valve branch.
Outside vacuum: YJ/H/K Archons, CRED2 slit viewer, and enclosure temperature probes.
Cooling services: glycol manifold and coldhead; helium lines and vane-motor cable connect to the compressor/control equipment in the mechanical room.
Electrical patch panels#
VIS EBox to NIR EBox#
Connection |
Service / medium |
Detail |
|---|---|---|
Power |
NIR supply feed |
From VIS EBox; supply arrangement is not yet selected |
Network |
NIR control and Archon links |
Routing follows the VIS network choice |
The mating panel is on the VIS EBox. NIR also needs power, network, and cooling for standalone AIT and maintenance, without the VIS assembly. Warm-side disconnects must allow NIR removal while VIS remains operational.
NIR EBox to cryostat and warm devices#
Connection |
Harness / service |
|---|---|
Support/motion VIB: mechanisms |
Actuator and position-sensor wiring; cold-side connections |
Support/motion VIB: thermal control |
Temperature-sensor and heater wiring |
YJ/H/K Archons |
Power and network; detector harnesses run to the detector VIB |
Enclosure probes |
May use the NIR temperature controller for monitoring |
The cryostat connections continue through the support/motion VIB. The CRED2 slit viewer remains outside vacuum.
EBox internal wiring#
Local AC/DC distribution powers the computer, controllers, hubs, and network electronics. Computer-to-controller/hub links are USB, Ethernet, or EtherCAT, according to controller selection. The NIR temperature controller connects to the local network.
Cryostat feedthroughs#
Support/motion VIB#
Warm-side connection |
Cold-side equipment |
Wiring |
|---|---|---|
Motion controllers |
Cold-pupil rotator, ADC pair, field rotator, X/Y steering, slit selector, cold shutter, YJ/H/K focus |
Actuator and position-sensor wiring |
Temperature controller |
Thermal sensors and heaters |
Sensor and heater circuits |
Detector VIB#
Warm-side connection |
Cold-side equipment |
Wiring |
|---|---|---|
YJ Archon |
YJ detector |
YJ detector harness |
H Archon |
H detector |
H detector harness |
K Archon |
K detector |
K detector harness |
Detector temperature-sensor and heater wiring still needs a VIB assignment.
Cryostat internal wiring#
The support/motion VIB feeds the mechanism and thermal harnesses. The detector VIB feeds separate YJ/H/K detector harnesses.
Assembly |
Drawing content |
|---|---|
Support/motion VIB |
Exterior connectors, feedthrough mapping, interior mechanism and thermal harnesses |
Detector VIB |
Exterior connectors, YJ/H/K channel mapping, internal detector harnesses |
Internal harnesses |
Vacuum-compatible assemblies, thermal anchoring, motion allowance, and accessible service breaks |
Shutter triggers#
Shutter controller |
Trigger inputs |
Connection to shutter |
|---|---|---|
NIR cold |
Hardware OR of YJ/H/K Archon signals |
Actuator wiring through the support/motion VIB |
The OR circuit and shutter-position sensing connections still need definition.
Slit-viewer connections#
Camera |
Location |
Connections |
Details still needed |
|---|---|---|---|
NIR CRED2 |
Outside vacuum |
Power, data, glycol |
Supply, host/interface, and hose connections |
Coldhead and compressor connections#
From |
To |
Service |
Detail |
|---|---|---|---|
Mechanical-room compressor |
Coldhead |
Helium lines |
Line assemblies, route, and service breaks open |
Compressor/control equipment |
Coldhead |
Vane-motor cable |
Equipment connectors and route open |
Cryo monitor |
Cryogenic equipment / network |
Monitoring and control |
Signal allocation open |
Compressor facility power and cooling are in the power and glycol harnesses.
Glycol connections#
From |
To |
Detail |
|---|---|---|
ZFront glycol manifold |
NIR distribution |
Supply and return |
NIR distribution |
EBox exchanger, YJ/H/K Archons, CRED2 |
Branch layout open |
Vacuum connections#
The NIR cryostat connects to a gauge and automatic gate-valve branch. The shared pump, manifold, and removable-NIR isolation connection are in the vacuum harness.
Team notes: The location and any glycol connection of the NIR coldhead need confirmation with the cryogenic design.