Page History

...

These numbers represent the delay, in microseconds, between the leading edge of a 120Hz pulse and the leading edge of the trigger pulse sent to the pulse picker spindle in order to "catch" the next pulse.

Timing Measurements

Measured on 2014-07-09 with reflaser and photodiode in XCS, using ioc/common/pulsepicker/R1.0.0 and firmware revision Ns=96.

...

• Flip-Flop mode:
  • 0ns (or minimum TDES) for aggressive timing (very next FEL pulse)
  • 8000ns for conservative timing (skip one FEL pulse, capture the one after that)
• Burst/Follower mode:
  • 0ns (or minimum TDES) for aggressive timing (very next FEL pulse)
  • 5000ns for conservative timing (skip one FEL pulse, capture allow/block the one after that)

MEC

• Flip-Flop (nShots=1) (Closed-to-Closed): 8100
• Burst (Closed-to-Open): ?

...