Optics optimization of tertiary particle beamlines and efficiency measurement of prototype scintillating fiber detectors

Two new beamlines, constituting extensions of the already existing H2 and H4 secondary beamlines of the North Area Complex of SPS at CERN, have been designed and installed in the framework of the CERN Neutrino Platform Project. These new extensions, designated H2-VLE and H4-VLE (Very Low Energy), will select and transport low energy (0.4 - 12 GeV/c) particles to the experiments NP-02 and NP-04 respectively. The particles, either mixed hadrons or pure electrons, are generated by the interaction of the H2 and H4 beams with a target at the end of each secondary beamline. In the first part of the present Diploma thesis, new optics configurations of the beamline magnetic elements have been developed. The new optics maximize the acceptance of the two lines and simultaneously minimize the spot size at the experiment, leading to the new baseline for these transport lines. In addition, the effects of possible spatial and rotational misalignments of the magnetic elements are studied and discussed. In the second part, an efficiency/multiplicity measurement of two novel types of scintillating fiber detectors is described. The feasibility of these new detector modules, one providing fast trigger signals, while the other particle-by-particle transverse position measurements, is demonstrated for the first time with in-beam test in CERN's PS-T10 line. The performance of the two detectors is crucial for the beamline commissioning during fall 2018.