Beamtime Problem-Solving Guide

Note

If you are uncertain about the procedure, please consult the beamline scientist.

Get familiar with setup

  1. Get familiar with LEEM2000 and U-view software interface

  2. Get used to checking the pressure of chambers often

  3. Understand high voltage rack, interlock and arc

Before measurements

  1. Fix data storage path (must do before scan!)

  2. Sample remove from main chamber or Sample insertion from load lock/air

  3. Annealing/degasing in preparation chamber or main chamber

  4. Sputtering in preparation chamber

  5. Cooling in main chamber

Alignments and setup-relates

Alignment examples location: c:/program data/leem2000/2025alignment example

  1. How to switch on High Voltage Rack

  2. LEEM alignment

  3. Insert slit and apertures in LEEM mode

  4. (Normally not needed) Detailed alignment start with UV-PEEM

  5. What if camera is not responding?

Beamline (x-ray)

  1. How to open valve in front end after beam dump

  2. How to align beamline before measurement

Measurements

  1. Table of available modes for checking which slit/aperture is needed

  2. How to insert slit/apertures

  3. How to set up camera parameters for scangui

  4. How to set up sequencer in scangui

  5. Example about how to name data files

  6. Example about how to determine beamline energy (range)

Change setup from LEEM to another mode

  1. XPEEM mode

  2. micro-XPS/Dispersive plane mode

  3. LEED mode

  4. Micro-ARPES/PED mode