The ATLAS Fast TracKer system
Journal Article
·
· Journal of Instrumentation
The ATLAS Fast TracKer (FTK) was designed to provide full tracking for the ATLAS high-level trigger by using pattern recognition based on Associative Memory (AM) chips and fitting in high-speed field programmable gate arrays. The tracks found by the FTK are based on inputs from all modules of the pixel and silicon microstrip trackers. The as-built FTK system and components are described, as is the online software used to control them while running in the ATLAS data acquisition system. Also described is the simulation of the FTK hardware and the optimization of the AM pattern banks. An optimization for long-lived particles with large impact parameter values is included. A test of the FTK system with the data playback facility that allowed the FTK to be commissioned during the shutdown between Run 2 and Run 3 of the LHC is reported. The resulting tracks from part of the FTK system covering a limited $$\eta$$-$$\phi$$ region of the detector are compared with the output from the FTK simulation. It is shown that FTK performance is in good agreement with the simulation.
- Research Organization:
- Carnegie Mellon Univ., Pittsburgh, PA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Oregon, Eugene, OR (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- AC02-05CH11231; SC0010118; SC0017996
- OSTI ID:
- 1818476
- Alternate ID(s):
- OSTI ID: 1828345
OSTI ID: 1833069
OSTI ID: 1833082
OSTI ID: 1837680
OSTI ID: 1893940
OSTI ID: 23163776
- Journal Information:
- Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 07 Vol. 16; ISSN 1748-0221
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English