Aidan. Dave H. Greg G. Thomas V.
We have, basically, finished installing all the electronics and cabling on the TCSX table. There are a few outstanding issues (summarized in the attached PDF). The ones that are preventing us from turning on the laser are listed below.
- For some reason, the flow meter is not outputting a sense current (current proportional to the measured flow). This means that the CO2 controller, D1200745, is registering low flow and preventing the laser from being turned on. We're not sure if this is a faulty connection at the terminal block in the meter or if there is a deeper problem. We will continue investigating on Monday. The connections are shown in photo 1.
- The TCS Beckhoff unit is, apparently, running but is not connecting to EPICS. We need to be able to access the software on/off switch to turn the laser on.
- We don't currently have the viewport IR sensor that plugs into the CO2 laser controller, D1200745. We can bypass this input by changing a jumper on the board.
We hope to address all these early on Monday to get the laser running to check the output power.
Chiller settings:
We adjusted the bypass valve on the back of the TCSX chiller to achieve the following settings (to mimic what's at LLO)
Flow rate: 3.4GPM
Pressure: 60.5PSI
Laser housing leak.
The replacement laser installed on the TCSX table also has a slow leak from the laser housing (in the same place as the first one) - about 1 drip every 5 minutes. We will check the output power of this laser before we pull it. See photos 3 & 4
