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In addition, there is a heater on the cyrostat body. Although this is not directly in-line with the CCD thermal path (Instec Cold Head → Cold Finger → CCD), it is important as it maintains the cryostat body at a consistent temperature and hence controls the radiative environment surrounding the CCD. The cryostat body heater also has a PID loop for controlling its characteristics.
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See CCD Cold Head Temperature Controllers for more details on the electrical connections for the Instec system.
See Archon CCD Controllers for more details on the electrical connections for the Archons.
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Sensor Details (and KTL Keywords)
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Cable Details
Description | Details | Notes | ||||
|---|---|---|---|---|---|---|
Instec Sensor and Heater Cable |
Air-side Instec cable:  Vacuum-side Instec cable (and Cold Head, with LN2 connections):  | Custom 30-ft long DB15 cable made by Instec. This cable goes between the Instec controller and the vacuum feedthru on the main vacuum chamber. Within the chamber there is a second cable between the vacuum feedthru and the Instec Cold Head. This cable is hard-wired into the Cold Head and not removable. | ||||
Cryostat Interconnect Drawing |  | Green Interconnect Diagram shown, Red Cryostat is equivalent with “G” replaced by “R” in cable IDs. | ||||
Cryostat Harness Details |
| Description of the various sensor and heater cables that go to the cryostat. |
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