Replacement Difficulty Key:
VERY DIFFICULT | Instrument will be off-line while this replacement happens. |
MEDIUM DIFFICULTY | Some care required, or extended time required for replacement |
EASY | Component easily accessible with minimal time required for replacement. Partial or no instrument down-time required for change. |
OPTICAL REALIGNMENT | Note indicating an optical realignment or verification is required after the component is replaced. |
Subsystem | Item Description | Manufacturer & Part Number | QTY in System | Cost / Lead Time* | Replacement Difficulty | Replacement Notes | Link To Relevant Procedure | General Notes | Spares in Hand? |
|---|---|---|---|---|---|---|---|---|---|
FIU | ADC prism rotators | Micronix PR-50-C0017 | 2x | $5500 ea / 10-12 weeks | VERY DIFFICULTOPTICAL REALIGNMENT | Requires:
| None | ||
FIU | H&K fiber stage | Micronix PPX-32CR-C0002 | 1x | $4500 ea / 10-12 weeks | VERY DIFFICULTOPTICAL REALIGNMENT | Requires:
| None | ||
FIU | Calibration Fold Mirror Stage | Micronix PPS-20-C0035 | 1x | $4400 ea / 10-12 weeks | VERY DIFFICULT | Requires:
| None | ||
Cal Unit | Octagon Stepper Motor | Thorlabs NR360S | 1x | VERY DIFFICULT | The rotation stage is accessible on the outside of the Calibration Bench, and mechanically this is a straightforward change. The difficulty lies in re-aligning the fold mirror mounted on the rotation stage, so that is directs the light from all sources onto the various fibers. | None | |||
Cal Unit | ThAr Lamp | Green Scientific G858A | 2x (1x Daily, | EASY | The lamps are easily accessible on the exterior of the Calibration Unit. | 1 spare | |||
Cal Unit | UNe Lamp | Photron P863 | 2x (1x Daily, | EASY | The lamps are easily accessible on the exterior of the Calibration Unit. | 4 spares | |||
Cal Unit | HCL Power Supply | Photron P209 Hollow Cathode Lamp Power Supply | 4x | EASY | The HCL power supplies are easily accessible within the Calibration Rack. | 1x Green Scientific Power Supply | |||
Cal Unit | BroadBand Source | Thorlabs SLS201L | 2x (1x Octagon, 1x Flat Field) | EASY | The broadband sources are easily accessible under the Calibration Bench. | None | |||
Cal Unit | Intensity Monitor Stage | Newmark MSL-50-21 | 1x | MEDIUM DIFFICULTY | Mechanically the stage is easy to remove, and the intensity monitor detector is simply mounted (on a post with no careful alignment requirements). Marked as medium difficulty given the care required to avoid damaging the bare optical fibers within the Calibration Unit enclosure. | None | |||
Cal Unit | Filter Wheel | Thorlabs FW102C | 3x (1x Octagon, 1x Flat Field) | MEDIUM DIFFICULTY | Mechanically the filter wheels are easy to remove with no careful alignment requirements. Marked as medium difficulty given the care required to avoid damaging the bare optical fibers within the Calibration Unit enclosure. | None | |||
Cal Unit | Compensator Motor | Newport TRA12PPD | 4x | Need TBD | |||||
Cal Unit | Shutters | Uniblitz DSS25B | 6x (2x Cal Bench, | MEDIUM DIFFICULTY | The various shutters are designed to be easily removable from their mounts. Marked as medium difficulty given time required to open the enclosure to access shutter, and care required while working around exposed optics and fibers. | 3 spares | |||
Cal Unit | Etalon Super Continuum | NKT SuperK EVO | 1x | $33.5k for new device, $8.5k to refurbish existing device. Lead 4-6 weeks. | EASY | The SuperK is easily accessible within Etalon Rack. | None | ||
LFC | PCF Fiber | ||||||||
Fiber System | Scrambler Timed Shutter | Uniblitz NS65B | 1x | MEDIUM DIFFICULTY | This shutter is designed to be easily removable from the scrambler. Marked as medium difficulty given time required to open the enclosure to access the shutter, and care required while working around exposed optics and fibers. | 1 spare | |||
Fiber System | Scrambler Source Select Shutter | Uniblitz RS20B | 2x | MEDIUM DIFFICULTY | These shutters are designed to be easily removable from the scrambler. Marked as medium difficulty given time required to open the enclosure to access the shutters, and care required while working around exposed optics and fibers. | 10 spares | |||
Fiber System | Agitator Motor | Galil BLM-N23-50-1000-B | 1x | MEDIUM DIFFICULTY | Motor is accessible on the outside of the agitator. A flex coupling is used between the motor and the agitator mechanism, so no careful alignment required. Marked as medium difficulty given the agitator is located within the crypt (not easily accessible and potential permits required). | None | |||
Vac Cart | Turbo Pump | Leybold TurboVac 450iX | 1x | VERY DIFFICULT | Vacuum chamber gate valve must be closed, and Vac Cart enclosure opened to replace pump. Vacuum pressure within chamber will be rising during this time (affecting instrumental stability), making this replacement time-sensitive. A WMKO turbo cart could be connected to the chamber during the replacement to help minimize the vacuum pressure change. | None | |||
Vac Cart | Roots Pump | Leybold EcoDry 65 Plus | 1x | VERY DIFFICULT | Vacuum chamber gate valve must be closed, and Vac Cart enclosure opened to replace pump. Vacuum pressure within chamber will be rising during this time (affecting instrumental stability), making this replacement time-sensitive. A WMKO turbo cart could be connected to the chamber during the replacement to help minimize the vacuum pressure change. | None | |||
Vac Cart | Isolator Stepper Motors | Lin Engineering 4118M-06S-22RO | 5x | VERY DIFFICULT | Requires warming up CCDs, venting main spectrometer vacuum chamber, and opening chamber door(s) to gain access to the motors under the optical bench. Depending on the motor’s location, the Vac Cart, Aux Rack and LN2 Autofill system might need to be disconnected and moved out of the way so the chamber door can open. | Used very infrequently (mainly for initial alignment of bench) | None | ||
Aux Rack | Cryostat Ion Pumps | Gamma 3SDI1V5KNN (3S TiTan) | 4x | VERY DIFFICULT | Requires warming up CCDs, venting main spectrometer vacuum chamber, and removing the large camera-access flange on the side of the vacuum chamber. | 500 hours at 1e-4mbar 5,000 hours at 1e-5mbar 50,000 hours at 1e-6mbar 500,000 hours at 1e-7mbar | None | ||
Aux Rack | LN2 Pumps | Instec LN2-SYS | 2x | MEDIUM DIFFICULTY | The pumps are easily accessible on the LN2 cart in the basement. Marked as medium difficulty given the steps involved:
There is also some risk involved, as care must be taken to avoid water vapor getting into the lines (leading to ice blocking the lines). If ice blocks the lines then the CCD must be warmed up and the lines purged (with a major disruption to the instrument stability timeline). | ||||
LN2 Cart | Autofill Solenoids | 2x |
Add Comment