R30-6 simulation with yaw misalignment
Log Number: 4547835Logbook(s): Entry Makers: brukerBody:
Introduced 1 degree of yaw misalignment into the R30-6 cathode by rotating everything else around the insulator axis.
Figure 1: No significant effect on the beam centroid, but note that the coordinate system is with respect to the photocathode normal, which is unrotated in this simulation, so the beam angle w.r.t. the beam pipe will be 1 degree larger (17.4 mrad). This would be noticeable but could still be zeroed with correctors.
Figure 2: This misalignment is beneficial from an IBB standpoint: ions above 180 keV or so are completely removed from the emission area.
