ZSpec VIS Harnesses & Connections

Scope: the VIS EBox, warm mechanisms, B/G/R detector packages, slit viewer, and module services. The ZSpec NIR harness covers the separately removable NIR assembly.

Related operations: ZSpec and environmental services. Diagrams: ZSpec and detector assemblies.

Assembly boundaries

• VIS EBox: computer, network, motion and cryocooler controllers, AC/DC distribution, and heat exchanger.

• Internal mechanisms and slit viewer: entrance shutter, ADC pair, field rotator, X/Y steering, slit selector, and slit viewer with focus if fitted.

• B/G/R detector packages: one detector cryostat, focus stage, coldhead, vacuum gauge, and automatic gate-valve per channel.

• Warm detector electronics: B/G/R Archons, outside the detector cryostats.

• Exposed glycol manifold

• Enclosure air feed connector

The relative VIS/NIR focus actuator’s mounting location is not yet assigned.

Electrical patch panels

ZFront EBox to VIS EBox

Connection	Service / medium	Detail
Power	120 VAC	From ZFront AC distribution
Network, option A	Fiber	One combined link to the VIS EBox
Network, option B	Fiber	Individual links to six Archons, plus a link to the VIS EBox

The mating panel is on the ZFront EBox.

VIS EBox to ZSpec VIS

Connection	Harness / service
ADC pair	Actuator and position-sensor wiring for two prism axes
Field rotator	Actuator and position-sensor wiring
X/Y steering	Actuator and position-sensor wiring for two axes
Slit selector	Actuator and position-sensor wiring
Relative VIS/NIR focus	Actuator and position-sensor wiring; actuator location determines final panel assignment
B/G/R detector focus	Actuator and position-sensor wiring, one focus per channel
VIS slit-view focus, if fitted	Actuator and position-sensor wiring
VIS entrance shutter	Power and control; Archon trigger wiring is separate
B/G/R Archons	AC power and network; detector harnesses run to the detector vessels
B/G/R Coldheads	Power and control
VIS slit viewer	Power and data; camera/interface selection is described below
Temperature monitor hub	USB to hub; 1-Wire branches to enclosure probes

VIS EBox to NIR EBox

Connection	Service / medium	Detail
Power	NIR supply feed	Supply arrangement between VIS and NIR is not yet selected
Network	NIR control and Archon links	Routing depends on the combined-link or individual-fiber choice above

These connections terminate at the NIR EBox input panel. The disconnect must leave VIS operating when NIR is removed.

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.

Detector harnesses and feedthroughs

Detector assembly	External harness	Physical boundary
VIS B	B Archon to B detector	B vessel feedthrough
VIS G	G Archon to G detector	G vessel feedthrough
VIS R	R Archon to R detector	R vessel feedthrough

The VIS cryocooler controllers have separate power, control, and sensing connections to their B/G/R detector assemblies.

Shutter triggers

Shutter controller	Trigger inputs	Connection to shutter
VIS entrance	Hardware OR of B/G/R Archon signals	Warm shutter actuator

The OR circuit and shutter-position sensing connections still need definition.

Slit-viewer connections

Camera	Location	Connections	Details still needed
VIS slit viewer	Outside vacuum	Power, data, possible glycol	Camera/interface selection and cooling need

Air connections

From	To	Detail
ZFront air manifold	VIS enclosure	Air feed with dryer; removal connection open

Glycol connections

From	To	Detail
ZFront glycol manifold	VIS distribution	Supply and return
VIS distribution	EBox exchanger, B/G/R Archons and coldheads	Branch layout open; slit-viewer cooling conditional

Vacuum connections

Each B/G/R detector vessel connects to a gauge and automatic gate-valve branch. Shared pump and manifold connections are in the vacuum harness.