تقرير
Measurement of the intrinsic hadronic contamination in the NA64$-e$ high-purity $e^+/e^-$ beam at CERN
العنوان: | Measurement of the intrinsic hadronic contamination in the NA64$-e$ high-purity $e^+/e^-$ beam at CERN |
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المؤلفون: | Andreev, Yu. M., Banerjee, D., Oberhauser, B. Banto, Bernhard, J., Bisio, P., Bondi, M., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., |
سنة النشر: | 2023 |
المجموعة: | High Energy Physics - Experiment Physics (Other) |
مصطلحات موضوعية: | High Energy Physics - Experiment, Physics - Accelerator Physics |
الوصف: | In this study, we present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c momentum. The analysis was performed using data collected by the NA64-$e$ experiment in 2022. Our study is based on calorimetric measurements, exploiting the different interaction mechanisms of electrons and hadrons in the NA64-ECAL and NA64-HCAL detectors. We determined the intrinsic hadronic contamination by comparing the results obtained using the nominal electron/positron beamline configuration with those obtained in a dedicated setup, in which only hadrons impinged on the detector. The significant differences in the experimental signatures of electrons and hadrons motivated our approach, resulting in a small and well-controlled systematic uncertainty for the measurement. Our study allowed us to precisely determine the intrinsic hadronic contamination, which represents a crucial parameter for the NA64 experiment in which the hadron contaminants may result in non-trivial backgrounds. Moreover, we performed dedicated Monte Carlo simulations for the hadron production induced by the primary T2 target. We found a good agreement between measurements and simulation results, confirming the validity of the applied methodology and our evaluation of the intrinsic hadronic contamination. |
نوع الوثيقة: | Working Paper |
الوصول الحر: | http://arxiv.org/abs/2305.19411Test |
رقم الانضمام: | edsarx.2305.19411 |
قاعدة البيانات: | arXiv |
الوصف غير متاح. |