trgEM is a FORTRAN 77 program to simulate the L1 calorimeter trigger. Last tested with SRT release 1.0.3.
Digitisation: Until recently digitisations of the calorimeter data have not been available from any other source and so a digitised history of the ADC output for each channel is produced internally. It is not intended to permanently store (i.e. disk or tape) this large amount of data.
Trigger logic: The various proposed trigger algorithms are implemented, both in terms of feature extraction and trigger topology.
Manpower: Neil Dyce, Paul Dauncey, Iain Scott

Plans

Current and future work is to finalize the trigger logic algorithms. Next internal milestone is end-October trigger implementation model workshop.
In the longer term, it is intended to make a objected oriented C++ trigger package to replace trgEM using the recently available digitisation code from the Calorimeter group (EmcSim)

Needs from other parts of simulation

In future, trgEM or its replacement will need the output from EmcGHitsToWaveform.

We wish to note that change of numbering scheme of the EMC crystals in GHits produced incompatibility problems (0.6.4 production was numbered 1 to 57 in theta and recent code is numbered 0 to 56 - it is not possible to mix 0.6.4 production backgrounds onto recent signal events) so it is crucial that both the structure of GHits and the interpretation of GHits be as stable as possible, and that changes be coordinated with all consumers.