Timing in the NOvA detectors with atomic clock based time transfers between Fermilab, the Soudan mine and the NOvA Far detector

21st International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Norman, A.^1 ; Niner, E.^2 ; Habig, A.^3

Fermi National Accelerator Laboratory, Bativa

IL, United States^1

Indiana University, Bloomington

IN, United States^2

University of Minnesota, Duluth

MN, United States^3

关键词: Accelerator complex;    Far detector;    High-precision;    Minnesota;    Neutrino fluxes;    Time offsets;    Time transfer;    Timing systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/8/082040/pdf
DOI  :  10.1088/1742-6596/664/8/082040

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The NOvA experiment uses a GPS based timing system both to internally synchronize the readout of the DAQ components and to establish an absolute wall clock reference which can be used to link the Fermilab accelerator complex with the neutrino flux that crosses the NOvA detectors. We describe the methods that were used during the commissioning of the NOvA DAQ and Timing systems to establish the synchronization between the Fermilab beam and the NOvA far detector. We present how high precision atomic clocks were trained and transported between the MINOS and NOvA detectors during a Northern Minnesota blizzard to validate the absolute time offsets of the experiments and make the first observation of beam neutrinos in the NOvA far detector.