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Proton and Neutron Induced Single Event Upsets in FPGAs for the PANDA Experiment
Stockholm University, Faculty of Science, Department of Physics.
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(English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578Article in journal (Refereed) Submitted
National Category
Accelerator Physics and Instrumentation
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-179676OAI: oai:DiVA.org:su-179676DiVA, id: diva2:1411564
Funder
Swedish Research CouncilEU, Horizon 2020, 654002Available from: 2020-03-04 Created: 2020-03-04 Last updated: 2020-03-04Bibliographically approved
In thesis
1. Developments for the FPGA-Based Digitiser in the PANDA Electromagnetic Calorimeters
Open this publication in new window or tab >>Developments for the FPGA-Based Digitiser in the PANDA Electromagnetic Calorimeters
2020 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The strong interaction between quarks and gluons is one of the fundamental interactions described by the standard model of particle physics. Systems of quarks bound together by the strong interaction are known as hadrons, of which the proton and the neutron are the most common examples. The theoretical framework of quantum chromodynamics (QCD) is used to describe the strong interaction, but becomes increasingly difficult to use as the distance between the interacting particles increases. On the length scales relevant for hadrons, for instance, non-perturbative approaches to QCD have to be used. Experimental data are needed to verify these approaches. PANDA is one of the four experimental pillars of the upcoming FAIR facility in Darmstadt, Germany. In PANDA, an antiproton beam with a momentum between 1.5 and 15 GeV/c will interact in a hydrogen or nuclear target, allowing studies of various aspects of non-perturbative QCD. Motivated by the high interaction rates and the diverse physics goals of the experiment, a triggerless readout approach will be employed. In this approach, each detector subsystem will be equipped with intelligent front-end electronics that independently identify signals of interest in real time. In the electromagnetic calorimeter, FPGA-based digitiser modules will be used for this task. The high-radiation environment in PANDA will pose a challenge to these modules, due to both potential radiation damage and high signal rates from the calorimeter. In this thesis, these issues are addressed. First, the results from experimental measurements and Monte Carlo modelling of radiation-induced single event upsets in the FPGA are described. These studies have allowed predictions of the rate of single event upsets during operation of PANDA. Secondly, a newly developed algorithm for real-time processing of calorimeter signals in an FPGA at high pile-up rates is described. This algorithm provides a significant improvement in the time resolution of the calorimeter and allows reconstruction of the pulse height and timing of piled-up detector signals.

Place, publisher, year, edition, pages
Stockholm: Department of Physics, Stockholm University, 2020. p. 198
Keywords
PANDA, calorimeter, FPGA, single event upset, Geant4, Monte Carlo, pile-up, feature extraction
National Category
Physical Sciences
Research subject
Physics
Identifiers
urn:nbn:se:su:diva-179733 (URN)978-91-7911-036-9 (ISBN)978-91-7911-037-6 (ISBN)
Public defence
2020-04-17, sal FB55, AlbaNova universitetscentrum, Roslagstullsbacken 21, Stockholm, 09:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 2: Submitted.

Available from: 2020-03-25 Created: 2020-03-04 Last updated: 2020-03-17Bibliographically approved

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