Speakers
Hans von der Schmitt
(MPI for Physics, Munich)
Hans von der Schmitt
(ATLAS)
Description
The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a
nominal rate of 1 GHz from beams crossing at 40 MHz. A three-level trigger system
will select potentially interesting events in order to reduce this rate to about 200
Hz. The first trigger level is implemented in custom-built electronics and firmware,
whereas the higher trigger levels are based on software. A system for the
configuration of the complete trigger chain is being constructed. It is designed to
deliver all relevant configuration information - e.g. physics selection criteria like
transverse momentum thresholds encoded in settings for level-1 hardware registers,
parameter values of high-level trigger selection algorithms, algorithm versions used
or prescale factors. The system should be easy to operate. It must store the history
of each trigger setup for later analysis. The same system will be used to configure
the offline trigger simulation. In this presentation an overview of the ATLAS trigger
configuration system is given including the underlying relational database, and the
tools for populating and accessing configuration information.
Primary author
Dr
Johannes Haller
(European Organization for Nuclear Research (CERN))
Co-authors
Dr
Andre dos Anjos
(University of Wisconsin)
Dr
Andreas Hoecker
(CERN)
Dr
Haimo Zobernig
(University of Wisconsin)
Dr
Hans von der Schmitt
(MPI for physics, Munich)
Dr
Landon Murrough
(Westfield and Queen Mary College, London)
Dr
Nick Ellis
(CERN)
Dr
Ralf Spiwoks
(CERN)
Dr
Takanori Kohno
(CERN)
Dr
Thorsten Wengler
(University of Manchester)
Dr
Werner Wiedenmann
(University of Wisconsin)
