The ion pump installed in the Red Side electronics bay is used to monitor the Red side dewar vacuum.

Monitoring software

The software used to monitor the LRIS vacuum is also used to run in conjunction with HIRES. Thus, stopping and starting the software will impact the monitoring on both LRIS and HIRES.

As LRIS eng there are two commands available:

ionshow - this will output a status of the LRIS and HIRES ion pump monitoring. Below is an example output of normal operation:

[1001] lriseng@lris-red: ionshow
rsh-ing to k1server for ionpump...
 
--- Status of the k1server ion pump task
        2018.k1server   (Detached)
 
--- Current hires ion pump keyword values
                         hicur = 0.000000100 amp
                        hivolt = 2.900000 KV
                        himode = 1 
                        histat = 3 
k1:hires:debug                 0
k1:hires:EchoOff.PROC          1
 
 
--- Current lris ion pump keyword values
                         lrcur = 0.000000100 amp
                        lrvolt = 2.900000 KV
                        lrmode = 1 
                        lrstat = 3 
k1:lris:debug                  0
k1:lris:EchoOff.PROC           1

Note that when the pressure is very low, the hicur will read 0.00000000 amp. This is okay.

An indication that the ion pump is working is the following:

lrmode = 1
lrstat = 3

If the above values are not 1 and 3, see the trouble shooting entry.

ionStart - restarts the monitoring process. This process calls a script in the background on k1server. Following a restart it takes about 5 minutes before valid readings are displayed from an ionshow. An e-mail is sent to interested staff that says the software was restarted and contains an output from ionshow. When turning the power on via the power gui, the software restart is initiated. See below for an example output:
```
[1002] lriseng@lris-red: ionStart
[1] 17715
[1003] lriseng@lris-red: 
[1]  + Suspended (tty input)         rsh -l k1obs k1server ionStart
```

Current Status

The current status of the LRIS ion pump may be reviewed in two ways.

A Current Status Graph is available from the intranet only.
Run ionshow as lriseng on the lrisserver. See above for details.

Software Twiki page

There is also a software twiki that Liz C. maintains. and is available at: Twiki page

Troubleshooting

see the troubleshooting page for basic troubleshooting information. The software Twiki page also has helpful troubleshooting options.