Hellman, Sten (Elementary Particle Physics (Department of Physics))

Salary grant to support 50% research time in ATLAS

2012-12-18T14:21:12Z

This application is for salary-support at the 50% level to enable me to participate in the exploitiation of the ATLAS experiment at CERNs new accelerator LHC which will commence operation in 2008 and record collisions at an unprecedented energy. In addition to coordination of the Stockholm University ATLAS group I will focus my personal contributions to the experiment in two fields. I have participated in the design and construction of the First level calorimeter trigger, and recently worked with developing tools to monitor its performance on-line. The trigger is now being commissioned in situ. As data appears there will be an intense period where we will work both to veryify that the trigger performs its functions as intended and also measure the efficiencies and rejections using recorded data. I am also preparing to participate in the analysis of physics data as they become available. I have concentrated on developing the analysis aiming at the discovery of stable massive particles. The observation of such particles would be an unambigouous sign of new physical phenomena beyond the established Standard Model. Early work aimed at establishing procedures to discover such particles but I have also developed methods to determine the mass of such particles. A natural continuation now is to investigate means to determine the properties of such particles with a special view to identify the underlying theoretical framework that describes these phenomena.

LHC and Beyond

2012-12-18T14:21:12Z

Our Nordic Joint Consortium has been formed to exploit the physics at the Large Hadron Collider, LHC, at the European Organization for Nuclear Research, CERN, in Geneva, Switzerland. LHC is expected to enable us to make the next big leap in particle research by providing us with higher energies and energy densities in laboratory conditions than ever before. We are thus approaching the conditions shortly after the Big Bang, entering a regime in which it will be possible to test and understand the fundamental mechanisms governing elementary particles. LHC is now at the final phases of installations and tests, and the collider will be starting in 2008.

The aim of this project is to maximize the physics outcome of LHC for the Nordic scientific
community, and to plan for next steps beyond the LHC.
The project objectives are:

to strengthen and optimize the Nordic participation in the LHC experiments,
to promote further the co-operation and sharing of best practices between the Nordic research partners, including using the Nordic Data Grid Facility (NDGF) for analysis of the LHC data,
to optimize joint Nordic R&D for the future generation of particle physics experiments, and
to prepare for a joint infrastructure application for the European Union.

Research with the ATLAS detector at the LHC

2012-12-18T14:22:02Z