Night shift summary Mon 05.02 -> Tue 06.02

Loic, Laurent
1.5 keV, 13 mrad, 1 pulse

Achievements

• With color 1 (upstream cells 2-12):
  -- Found KB bender setttings for best focus at sample Z = 0 mm
  -- Measured beam size with curved gratings as a function of Z, both with horizontal and vertical focus

• With color 2 (downstream cells 14 - 23):
  -- measured beam size as a function of Z

• Vented FFT, removed the Ag filter from the FFT. Pumped down FFT afterwards.

Problems

• The horizontally focused beam has a tail that can only be removed by closing the HSLITS
• Large fluctuations of the beam pointing result in partial to full to no cut of the beam by the HSLITS. BKR said that the beam conditions are not optimized.
• Beam pointing got worse after going to color 2