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

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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

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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 Modified

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.

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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.