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OBSOLETE

go here instead:

Taking the Beam V2

WORK IN PROGRESS

Know the risks:

• Don't pinch the cable on the Rayonix while moving in and out.
• Do not insert reference laser without S4.5 (control on the touchpad by door) inserted. MPS will trip if you do.

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Prepare useful screens:

1. The XRT:M2H control screen (LCLS>Other Screens>M3H) or LCLS>HOMS Overivew>XRT M2H or LCLS>HOMS XRT M2. These authors prefer the Flat Mirror screen below (option 2)
   

   1. 

2. It's also a good idea to navigate to the XRT section of the MFX light path. You can get there by clicking on the panel below the dot map of the main screen. Click on the XRT section (yes, it's a button). Your goal is to check the state of HFX Stopper (also known as DG2 stopper). When moving XRT:M2H, you should first ensure that the HFX stopper is closed.

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   2. This is the "old school" screen. We're looking for DG2 stopper in this case.

S2 stopper should be in, in order to move

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Move the HOMS to -0.3 and the pitch to about -612 

Procedure:

1. Waiting for beam, you can do things like:  

   
   

   Code Block
   language py theme Midnight firstline 1
   awr mfx

    

   
   

   (awr script is "read only", so it's innocuous, safe, and you should do it)
2. Insert the (Pop-In-Monitor) PIM-DG1 and PIM-DG2 via the MFX light path MFX section (YAG position on the pull down)
3. Prepare a screen to view DG1 (via python viewer, navigate to MfxDg1Yag)
4. Set hutch attenuators at 1E-1 (for viewing)
5. Take note of the transfocator arrangement (in case you want to take it out), e.g. LU44 used prefocusing lens #2 and lenses 1,5,6.
6. When you get access to the beam, it's good to remove the prefocusing lens and open the DG1 slits to 2x2. This will let you center without the lens. Then reinsert. Some repositioning through the lens is okay, but if you have to rep

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Can check

monitor on DG1

slits 0.7 and 0.7 

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