How to do a quick alignment                     How to do a full alignment            

Quick alignments

It is a good idea to re-align the diffractometer to optimise the intensity at the beginning of your beamtime - but this should also be done after an injection / and at the start of each dataset you collect.

You can do an automatic re-alignment using the Quick Alignment button in MxCube.

Alternatively, you can find the PX session on bm16mach and type

PX >quickalignment

Note: To do a quick alignment the experimental hutch needs to be interlocked and the position for the macro to work! If the quick alignment fails - a message will appear in MxCube to let you know it hasnt worked. You should then check the hutch is interlocked. Check that the FE is open and that there is beam in the ring. Check that there are no attenuators in place. Increase the size of the beam to 0.4 vertically by 0.4 horizontally. Redo the Quickalignment. If this doesnt work - you should do a full alignment.

Full beamline alignment

For most circumstances a Quick alignment is sufficient but if you have carried out a large energy jump or if the FE has been closed or the beam dumped you should carry out a Full Alignment by clicking on the button in MxCube or by typing

PX >fullalignment

If the full alignment fails - redo all the checks recommended above then call your LC.