Skip to ContentSkip to Navigation
About usNews and EventsNews articles

Verification of a novel calorimeter concept for studies of charmonium states

31 October 2011

PhD ceremony: Mr. E. Guliyev, 12.45 uur, Aula Academiegebouw, Broerstraat 5, Groningen

Dissertation: Verification of a novel calorimeter concept for studies of charmonium states

Promotor(s): prof. H. Löhner

Faculty: Mathematics and Natural Sciences

Particle physics has revealed the fundamental and elementary constituents of matter, quarks and leptons. However, it remains a challenge to understand how composite particles like nucleons, the building blocks of atomic nuclei, can gain their mass from massless constituents. Insight is best obtained by studying composite systems containing a heavy “charm” quark, or by demonstrating a predicted new “exotic” type of composite systems with yet unobserved quark combinations. Such systems can be produced through intense antimatter annihilations at the new accelerator complex FAIR (Germany) in the near future. The systems of interest have to be studied with high-precision particle beams but also with detectors of ultimate accuracy. Photons of high energy, which are among the most abundant decay products of the short-lived charm- or exotic particles, will be measured in a large crystal spectrometer. Essential electronic components of such a detector and the corresponding analysis techniques have been developed and studied in this thesis. A new approach to precisely evaluate the large amount of measured signals in programmed chip-arrays and to exactly determine their characteristic features has been verified in various experiments using accelerated particles and cosmic rays. The results presented in this thesis demonstrate that a large data rate can be reliably and precisely processed, which is mandatory to investigate a huge amount of annihilation events. The logic components and program elements have been fitted to commercially available devices. Interest in our developments has been shown from a commercial company and foreign experimental groups.

Last modified:15 September 2017 3.40 p.m.
printView this page in: Nederlands

More news

  • 17 May 2019

    "Worms man" Dr. Jeroen Onrust wins Science Prize Campus Fryslân 2019

    Bioloog Jeroen Onrust mag zich de winnaar noemen van de Wetenschapsprijs Campus Fryslân 2019. Onrust onderzocht voor zijn promotieonderzoek bij Rijksuniversiteit Groningen/Campus Fryslân het belang van regenwormen op de vruchtbaarheid van agrarisch...

  • 16 May 2019

    Grote spiraalstelsels maken zeer efficiënt sterren

    Grote spiraalstelsels, zoals onze naaste buur de Andromedanevel, laten bijna geen gas- of stofdeeltjes onbenut bij het vormen van sterren. Dat hebben Nederlandse astronomen berekend aan de hand van de draaisnelheden van ruim honderd nabije stelsels...

  • 15 May 2019

    Academy Medal for Trudy Dehue

    Trudy Dehue, scientific sociologist, author and emeritus professor of the University of Groningen, will receive the Academy Medal from the Royal Netherlands Academy of Arts and Sciences (KNAW). The Academy Medal is awarded every other year to individuals...