Detectors for luminosity frontier collider experiments

Prof. Dr. Peter Krizan
Josef Stefan Institute


In luminosity frontier experiments, New Physics is being searched for in precision studies of rare processes. The most important example of such an experiment is the super B factory. While B factories were built to check whether the Standard Model with the CKM matrix offers a correct description of CP violation, the next generation of B factories, the so called super B factories, will look for departures from the Standard Model. For such a study, a 50 times larger data sample is needed. To achieve the necessary increase of event rates by a factor of 40, a substantial upgrade is required both of the accelerator complex as well as of the detector. To maintain the excellent performance of the detector, the critical issue will be to mitigate the effects of higher backgrounds (by a factor of 10 to 20), leading to an increase in occupancy and radiation damage, as well as fake hits and pile-up noise in the electromagnetic calorimeter. Higher event rates require substantial modifications in the trigger scheme, DAQ and computing relative to the current experiments. In addition, improved vertex detection and hadron identification are needed, and similarly good (or better) hermeticity of the detector is required. We will discuss the motivation for SuperKEKB/Belle II, the super B factory at KEK, as well as the requirements for the accelerator and for the detector. Finally, the present status of the project will be presented together with the plans for the future.



Short Bio