Speaker
Mr
Ralf Spiwoks
(CERN)
Description
The ATLAS Level-1 Muon to Central Trigger Processor Interface (MUCTPI) receives
information on muon candidates from the muon trigger sectors and sends multiplicity
values to the Central Trigger Processor (CTP). The CTP receives the
multiplicity values from the MUCTPI and combines them with information from the
calorimeter trigger and other triggers of the experiment and makes the final
Level-1 decision. The MUCTPI and CTP are housed in two 9U VME64x crates and
are made of eight different types of custom designed modules.
This paper will present the framework which is used for debugging, commissioning
and operation of all modules of the MUCTPI and CTP. Testing of the modules has
been considered right from design. Most types of modules contain diagnostic
memories at the input of the module which can be used to capture incoming data
or to inject data into the module. Testing of the modules can be achieved by
capturing data at input of a down-stream module, by reading out data from
a monitoring buffer at output, or by reading out monitoring counters.
A layered software framework using C++ has been developed for configuring and
controlling all modules and for testing them independently or grouped into
complete sub-systems. The lowest level uses the ATLAS VME library and driver.
At the next highest level, a compiler translates a description of the VME
registers from XML to C++ code. This code together with existing code for some
components, e.g. HPTDC, DELAY25, and JTAG, is combined to the low-level library
of the module. A menu program provides access to all methods of the module
low-level library. Generators create data for the test memories. Simulators
calculate the expected results. Generators, simulators and the low-level
library are combined to a suite of test programs which cover the full functionality
of the MUCTPI and CTP. The low-level library is also used by the
run control and monitoring programs which integrates the sub-systems into the
ATLAS experiment control and monitoring framework.
Author
Mr
Ralf Spiwoks
(CERN)
Co-authors
Mr
Andrea Messina
(CERN)
Mr
Daniel Sherman
(CERN)
Mr
David Berge
(CERN)
Mr
Johan Lundberg
(CERN)
Mr
Nick Ellis
(CERN)
Mr
Philippe Farthouat
(CERN)
Mr
Stefan Haas
(CERN)
Mr
Stefan Maettig
(DESY)
Mr
Thilo Pauly
(CERN)
