Page History
...
- 288 bits of "event codes":
- some have well-defined meanings (in progress)
- 16 highest bits are hutch specific for sequences (272-287)
- DAQ readout groups are "extra bits" included at end of timing frame
- timing frames have "destinations": e.g. bykiks, and bykikh both go to "bsy" dump
- unlike LCLS1 we will not be using event-codes to understand when bykiks has fired: use destinations instead
- To trigger on "every shot" with beam (the equivalent of LCLS1's eventcode 140) use "Mode=FixedRate:1MHz, Destination=Include:DumpSXR" (without the "destination" field I believe you will just get a pure 1MHz trigger)
Rates
- timing arrives 100us prior to beam
- accelerator max rate is 13/14MHz=929kHz
- The 71428Hz rate is special: common between LCLS1 and LCLS2
- 928kHz is max rate, but accelerator pattern repeats every 910k buckets
...
Overview
Content Tools