Readout system of the ALICE Fast Interaction Trigger
Year of publication
2020
Authors
Finogeev, D.; Karavicheva, T.; Serebryakov, D.; Tikhonov, A.; Trzaska, W.H.; Vozniuk, N.
Abstract
The Fast Interaction Trigger (FIT) detector will be essential for the operation of the ALICE experiment at CERN during Run 3 and 4 of the LHC . FIT will serve as an interaction trigger, luminometer, the first indicator of the vertex position, and the forward multiplicity counter. It will also provide the precise collision time for the TOF-based particle identification, yield the centrality and interaction plane for flow measurements, and measure cross sections of diffractive processes. In order to cope with an increased interaction rate of up to 1 MHz in proton-proton (pp) collisions and up to 50 kHz in Pb-Pb collisions, a new readout system for the ALICE FIT detector has been designed and implemented. FIT readout system is compatible both with the triggered and continuous (triggers-less) ALICE readout modes. The GBT-FPGA based FIT readout and trigger systems allow to stream data up to 5.5 MHz event rate with 3.2 Gbps data rate. The trigger processing time is only 225 ns. With the additional 200 ns delay along the connecting signal cables, the total latency of the FIT trigger is 425 ns.
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Publication type
Publication format
Article
Parent publication type
Journal
Article type
Original article
Audience
ScientificPeer-reviewed
Peer-ReviewedMINEDU's publication type classification code
A1 Journal article (refereed), original researchPublication channel information
Journal
Publisher
Volume
15
Issue
9
Article number
C09005
ISSN
Publication forum
Publication forum level
1
Open access
Open access in the publisher’s service
No
Self-archived
No
Other information
Fields of science
Physical sciences; Electronic, automation and communications engineering, electronics
Keywords
[object Object],[object Object],[object Object],[object Object]
Publication country
United Kingdom
Internationality of the publisher
International
Language
English
International co-publication
Yes
Co-publication with a company
No
DOI
10.1088/1748-0221/15/09/C09005
The publication is included in the Ministry of Education and Culture’s Publication data collection
Yes