Thermal control report

Closed-loop detector thermal-control screening for survival hold and operational set-point maintenance.

• Design signature: e7299394ee064c9cc1ae90143c5a37f3f3657daab38c5a3e8f4110b675699929
• Overall verdict: PASS
• Total heater capacity: 7.000 / 7.000 W

Architecture

The detector control sensor and heater channels are evaluated against the released detector thermal node, which currently traces to the detector cold-finger hardware.

Sensors

• detector_control on thermal node detector as primary_control: detector cold-finger interface immediately behind the focal detector package.
• detector_mount_guard on thermal node detector_mount as guard: detector mount clamp saddle adjacent to the cold-finger clamp split line.
• focal_plane_monitor on thermal node focal_plane as monitor: focal-plane package rear electronics deck near the readout boxes.

Heater zones

• detector_heater_primary on thermal node detector as primary_survival: 4.500 W max at primary foil heater bonded to the detector cold-finger root.
• detector_heater_redundant on thermal node detector as redundant_survival: 2.500 W max at redundant foil heater bonded to the opposite detector cold-finger face.

Gate checks

• thermal_control_sensor_roles_complete: PASS
• thermal_control_heater_capacity_matches_budget: PASS
• survival_hold_passes: PASS
• operational_setpoint_passes: PASS

Survival Hold

• Verdict: PASS
• Scenario: transient1 from hot1 at 30.0 s steps for 28800.0 s
• Detector node detector: 91.008 -> 90.999 K; min/max 90.995 / 91.008 K
• Overshoot: 0.008 K; settle time: 0.0 s
• Last-window error: mean 0.002 K, max 0.004 K
• Heater usage: peak 0.089 W, energy 0.336 Wh
• Guard sensor peak: 109.926 K
• Monitor sensor peak: 119.398 K
• Artifacts: survival_hold_response.svg, survival_hold_response.csv

Operational Setpoint

• Verdict: PASS
• Scenario: transient1 from cold1 at 30.0 s steps for 28800.0 s
• Detector node detector: 82.559 -> 92.022 K; min/max 82.559 / 92.067 K
• Overshoot: 0.067 K; settle time: 1620.0 s
• Last-window error: mean 0.024 K, max 0.029 K
• Heater usage: peak 7.000 W, energy 35.483 Wh
• Guard sensor peak: 100.297 K
• Monitor sensor peak: 104.456 K
• Artifacts: operational_setpoint_response.svg, operational_setpoint_response.csv

Visuals

• control_architecture.svg