Poster

Measurement of the top quark pair production cross-section at 13.0 TeV based on 59.8 fb-1 of 2018 CMS data is presented. New method combining both dilepton and lepton+jets channels is used to constraint lepton and b-tag scale factors..

A large charge of the driver is required for effective wakefield acceleration, and, therefore, a long driver with the plateau (in the entire cross-section of the driver) on the decelerating wakefield for the driver is necessary. Moreover, a large charge of witness is needed, and consequently, a long witness with the plateau (in the entire cross-section of the witness) on the accelerating field for witness. [...]

The charge of an electron bunch is one of the most important parametersin accelerator physics. Several techniques to measure the electron bunch charge exist.However, many conventional charge diagnostics face serious drawbacks when applied to plasmaaccelerators. [...]

Abstract: Background and AimsAt the Photo Injector Test facility at DESY in Zeuthen (PITZ), an R&D platform for electron FLASH radiation therapy and radiation biology is being prepared (FLASHlab@PITZ). Utilizing the uniquely wide parameter range of the PITZ accelerator, the FLASH effect can be studied systematically for an extremely wide range of beam conditions. [...]

Future detector systems have increasing demands on the performance of their mechanical support structures and cooling systems. Novel materials and cooling technics are developed and continuously improved in order to fulfil these requirements. [...]

Silicon sensor based particle detectors operated in an hadronic radiation environment need to be cooled to counteract the radiation induced leakage current and prevent thermal runaway. To achieve this most efficiently, a low thermal resistance is required between the detector modules and the cooling structures. [...]