This procedure is written for the LPL operation after the 100J upgrade. The LPL upgrade changed the beam size and relay imaging after the 1" CD amplifier. The upgraded setup employed new irises and new camera imagers for alignment checks with higher precision. The new procedure includes the hardware turn-on, the software turn-on, a new alignment routine (using imagers and irises), commands for SHG and HWP optimization, and recipes for new pulse shapes. 

TO DO

• first turn the chillers on then the power supply for the front end (to prevent unecessary error messages)
• add a step saying 'wait for the edrive alarm sound to turn on'add a step saying 'open the LPL control window from the MEChome screen'
• add a capability to put by default 'dither' to Yes
• press Y after the dither step again
• press Y until happy with the shape
• after SHG optimization, if you want to check Scope B enable 10 Hz on nsSlicer

...

• Set hutch to “Class 1”, or “Class 4 Glass Laser”, or “Class 4 Dual Laser”, or “Class 4 Split Mode
• At the LSS display, badge in and open Shutter S4, and press the “Press to reset interlocks"

  • Turn on four chillers

• Image Added

  Figure 1: 4 chillers

• Turn on four TDK Lambda power supplies. Power switch to “1” .Press the tiny “out” button at each of the 4 supplies.

  

Figure 12: TDK Lambda power supplies

• Turn on six eDrives: keys and power buttons

Figure 23: six eDrives

• Turn on four chillers

Image Removed

Figure 3: 4 chillers

• Switch on NP Photonics Seed Laser: toggle the “pump” switch from position 0 to 1. You will see PWR ramp up to around 140mW.

...

• ssh mec-laser
• mecpython
• import meclas
• meclas.YFE.On()
  • There will be a series of events that will happen to stabilize the seed laser prior to turning on the current to the YFE laser heads. If and when all conditions are stabilized, a series of audible ringing chimes can be heard coming from the e drives. It can take anywhere from 10's of seconds to several minutes for the conditions to be sufficient that the e drives can be turned on. This is the indication that the YFE laser is operating the that a beam is present at the LSS shutter S4.

Open LSS shutter and scope menu

...