Time Projection Chambers for the T2K Near Detectors

By T2K Collaboration. 2010

141 citations recorded by the source corpus.

The T2K experiment is designed to study neutrino oscillation properties by directing a high intensity neutrino beam produced at J-PARC in Tokai, Japan, towards the large Super-Kamiokande detector located 295 km away, in Kamioka, Japan. The experiment includes a sophisticated near detector complex, 280 m downstream of the neutrino production target in order to measure the properties of the neutrino beam and to better understand neutrino interactions at the energy scale below a few GeV. A key element of the near detectors is the ND280 tracker, consisting of two active scintillator–bar target systems surrounded by three large time projection chambers (TPCs) for charged particle tracking. The data collected with the tracker are used to study charged current neutrino interaction rates and kinematics prior to oscillation, in order to reduce uncertainties in the oscillation measurements by the far detector. The tracker is surrounded by the former UA1/NOMAD dipole magnet and the TPCs measure the charges, momenta, and particle types of charged particles passing through them. Novel features of the TPC design include its rectangular box layout constructed from composite panels, the use of bulk micromegas detectors for gas amplification, electronics readout based on a new ASIC, and a photoelectron calibration system. This paper describes the design and construction of the TPCs, the micromegas modules, the readout electronics, the gas handling system, and shows the performance of the TPCs as deduced from measurements with particle beams, cosmic rays, and the calibration system.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bf78acb78964a4746d18172ba4e49c45bda8af89

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In Nuclear and High Energy Physics

Citations in the corpus

Measurement of neutrino and antineutrino oscillations by the T2K experiment including a new additional sample of nu(e) interactions at the far detector (2017, unknown): “charged current interactions are selected in the tracker region of ND280, which consists of three Time Projection Chambers (TPC1, 2, 3) [72], interleaved with two Fine-Grained Detectors (FGD1, 2) [73].”
Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, methodology): “A photoelectron-based calibration system was used in the T2K gaseous (predominantly Ar), TPCs [139].”