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Table of Contents:
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Each cryostat will have two ion pumps attached. One will be operated continuously and the second will sit idle as a backup. Each pump has a dedicated controller (for a total of four in the system).
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Each ion pump is named with respect to its camera (Green /or Red) and the side of the spectrometer it is on (Echelle/Collimator). The driver here is that the name then echelle or collimator). Therefore the name gives the location of the pump (whereas labels like “Green #1” or “Red 10 o’clock” or “Green Prime” require more information to derive the position).
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Relevant Devices
Description | Qty | Source | Part Number |
|---|---|---|---|
Ion Pump |
Controllers | 4 | Gamma1 | SPC-1-P-S-1-US110-E-S-N |
Ion |
Pumps | 4 | Gamma1 | 3SDI1V5KNN (3S TiTan) |
HV Cables [Air |
] | 4 | Gamma1 | 10K-SC10-10K (10 m) |
High Voltage Vacuum Feedthrough | 2 | Gamma1 | |
HV Cables [Vacuum] | 4 |
Custom
Gamma1 | 10K-TF3-5K (PTFE 3m long) |
1 Gamma products were ordered through Edwards Vacuum (Western-US Gamma distributor)
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Relevant Functional Block Diagram
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Cable Details
Cable | Qty | Details | Notes |
|---|---|---|---|
Ethernet | 4 | Cat6 Copper Ethernet Cable M-M, 6 feet long | Entirely within Aux Rack |
High Voltage [HV] | 4 | Part numbers within table and diagram above. |
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Relevant Datasheets & Manuals
Description | File | Source | |||||
|---|---|---|---|---|---|---|---|
| 1 | SPC Controller Spec Sheet |
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| 2 | SPC Controller Manual |
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| 3 | SPC ModBus Register Map |
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| 4 | Ion Pump specs |  | Screengrab of: https://www.gammavacuum.com/products/small-titan-ion-pumps/3211/3s-titan-ion-pump?number=&c=17662 | ||||
| 5 | Ion Pump Certificates of Performance (all 4 from original pumps) |
| Shipped with pumps |
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Installation Instructions
Description | File |
|---|---|
Set IP Address | Press the ‘OK’ button to open the menu dialog:  Use the right arrow to go to the ‘Ethnt’ option:  Choose the ‘Addr’ setting:  Then:
Then go to the ‘Mask’ setting in the ‘Ethnt’ menu:  The subnet mask should be set to 255.255.255.0. Then go to the ‘Gatewy’ setting in the ‘Ethnt’ menu:  The gateway should be set to 192.168.23.1. (A gateway isn’t used by the KPF Private Network, but setting a value here just in case the device needs one). |
Enable the high |
-resolution mode for reporting pressures (this is a front-panel-only setting). |  |
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Set IP Address |
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Dispatcher Configuration File
This dispatcher is part of kpfgreen (currently) and will be part of kpfred. There will be four dispatcher instances running each with a unique configuration file.
Values with $(NAME) note that the name of the ion pump will be specified in the configuration file and allow both ion pumps for a given cryostat to have a unique name (e.g., Ech and Coll for echelle side and collimator side.)
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Keyword
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Value
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Type
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$(NAME)_CURR
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The current at the pump in Amps.
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Double - read only
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$(NAME)_VOLT
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.
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Double - read only
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$(NAME)_STATUS
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Current controller status - see manual for details
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String - read only
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)
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Is the pump on?
0 - no
1 - yes
2 - unknown (most likely only at startup or if connection lost)
If written, will apply that state. Unknown is a no-op on a write.
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Enumerated - is writable.
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$(NAME)_LCK
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Locks turning the pump off and on.
0 - Locked
1 - Unlocked
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Enumerated
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$(NAME)_IP_MODEL
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Model of the device as reported by the device.
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String - read only
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$(NAME)_IP_FIRMWARE
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Firmware version of the device as reported by the device.
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String - read only
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DISP#XXXX
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Usual dispatcher keywords.
STOP - stops dispatcher
CONN - IP address and port
DEV - device name from config file
STA - status and includes whether or not a connection is made.
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The required sections are:
main which points to service name and stdiosvc configuration file
device which has the details of the device
dispatcher which has the dispnum value and the $(NAME) variable
Configuration | Value | Explanation |
|---|---|---|
address | 192.168.23.149 auxrack-ionpump-3 | the IP address of the device, can include an optional name from /etc/hosts |
port | 23 | IP port to telnet to |
poll_time | 5 | how often to query for the data from the device |
device_name | Green Collimator IP | this is the value of the DISP#DEV keyword, so a long name is helpful |
cal | 1.00 | the calibration value, applied at the initial connection by the dispatcher, needs to be between 0 and 1 |
size | 2.0 | the size of the pump in L/s, should be 2.0 |
dispnum | 2 | the number of the dispatcher |
name | Coll | The short name used for keywords as $(NAME). The service name will include the name of the cryostate (kpfgreen / kpfred) and this is for the IP. |