Research in particle and astroparticle physics at KTH
The section is involved in a broad range of topics. Below a is brief description of the research projects that we are involved in and links to find more information.
The research of particle physics group is based on the frontline of hadron collider experiments. The main scientific goals are to search for the Higgs boson and to probe for physics beyond the standard model, where the search for supersymmetry is a key element. One fundamental question is if the lightest supersymmetric particle constitutes the bulk of the dark matter. The KTH group has since 1990 taken its share in the development and later the construction of the ATLAS liquid argon electromagnetic calorimeter. ATLAS is one of the large experiments at the CERN Large Hadron Collider. KTH has shared the responsibility for the construction, assembly and testing of the ATLAS presampler with a research group from Grenoble. This device, mounted inside the barrel liquid argon cryostat compensates for energy losses in front of the electromagnetic accordion type calorimeter. The group is also involved in ATLAS heavy quark studies as a probe of QCD.
The astroparticle physics group conducts research on the high-energy universe through the study of X- and gamma-radiation and cosmic rays. The scientific programme of the group focuses on analysis and interpretation of observational data, in particular concerning compact objects and transients, such as gamma-ray bursts, active galactic nuclei and pulsars. We primarily use two space missions:
(1) The Fermi satellite, launched in June 2008 on a 10 year long mission to study celestial gamma-ray sources in the energy range 10 MeV - 300 GeV, with unique sensitivity.
(2), a balloon-borne hard X-ray polarimeter which studies the polarisation of emissions from the Crab and Cygnus X-1.
The group participates in the EUSO (Extreme Universe Space Observatory) project, with the goal to study ultra-high energy cosmic-rays with an instrument in space. Currently we are working on a pre-cursor, Mini-EUSO, to be placed on ISS in 2017.
We are also participating in preparations for the European Space Agency "M4" mission,, an imaging X-ray polarimeter and (an “M5”-proposal) for gamma-ray astrophysics in the MeV energy range. We have previously been involved in the mission which studied cosmic-rays with a focus on antiparticles.