Ion Pump Controller
- Steve Gibson
- Bradford Holden (Unlicensed)
Table of Contents:
Introduction
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).
Each ion pump is named with respect to its camera (Green or Red) and the side of the spectrometer it is on (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).
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 | Gamma1 | 10K-TF3-5K (PTFE 3m long) |
1 Gamma products were ordered through Edwards Vacuum (Western-US Gamma distributor)
Relevant Functional Block Diagram
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. |
|
Relevant Datasheets & Manuals
Description | File | Source | |
|---|---|---|---|
| 1 | SPC Controller Spec Sheet |  | |
| 2 | SPC Controller Manual |  | |
| 3 | SPC ModBus Register Map
|  | |
| 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 |
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). |
|
Set IP Address |
|
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.)
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. |