Ion Pump Controller

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	Source
1	SPC Controller Spec Sheet	https://www.gammavacuum.com/index.php/product?id=64
2	SPC Controller Manual	https://www.gammavacuum.com/index.php/product?id=64
3	SPC ModBus Register Map	https://www.gammavacuum.com/index.php/product?id=64
4	Ion Pump specs (Titan 3S-DI-1V-5K-N-N)	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
Enable the high pressure resolution mode (this is a front-panel-only setting).

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.