ALICE-HMPID performance in the identification of deuterons in central Pb-Pb collisions in the transverse momentum range 3-8 GeV/c.

The summer student project carried out from June to August of 2016 will be covered in this report. The main aim of this programme was to monitor the performance of the detector, such that two macros were written to carry out this objective. The resolution of the measurement of the angle (among other parameters) depends on the number of photons per ring, and therefore we needed to monitor the number of photons. This quantity depends on the gain of the Multi Wire Proportional Chamber (MWPC) and the radiator transparency and the Caesium Iodide Quantum Efficiency cannot. However, the Quantum Efficiency cannot be measured directly unlike the gain and transparency, and may therefore only be inferred from the stability of the number of photons (assuming that the other parameters are also stable). Therefore a macro was implemented to extract these values, and summary plots were used for comparative analysis.