Speaker
Description
T2K (Tokai to Kamioka) is a long baseline neutrino experiment located in Japan\cite{t2k}. Over the last few years, the experiment has been focused on the study of the $\delta_{CP}$ phase parameter of the PMNS matrix, which may introduce a Charge-Parity violation component in the Leptonic Sector. \
T2K has entered its Second Phase, characterized by upgrades of the Beam Line and of the Near Detector. The new Near Detector design includes the installation of a new target and tracking system, including two High Angle Time Projection Chambers devoted to the identification of charged particles at large angles with respect to beam direction\cite{t2kup}.\
HA-TPCs are based on a gaseous active volume contained in a Field Cage made of lightweight composite material, combining optimal mechanical and electrical properties with minimal radiation length and dead volume.
The readout is performed by innovative Resistive Micromegas modules featuring a resistive layer for charge spreading on top of the readout plane to enhance spatial resolution performances. The mentioned technologies have been tested during several test beams and cosmic rays campaigns\cite{cern2018}\cite{desy2019}\cite{cern2022}\cite{eram2023}. After the installation at J-Parc in Fall 2023, a commissioning period of data taking with cosmics and then with a neutrino beam has been performed.
This poster focuses on the characterization and commissioning performances of the HA-TPCs at CERN and J-Parc, including also the first results using beam neutrinos interactions.
\begin{thebibliography}{999}
\bibitem[1]{t2k}
Abe, K.; et al. The T2K experiment. {\em Nucl. Instrum. Meth. A} {\bf 2011}, {\em 659}, 106--135.
\bibitem[2]{t2kup}
Abe, K.; et al. T2K ND280 Upgrade--Technical Design Report. {\em arXiv} {\bf 2019}, arXiv:1901.03750.
\bibitem[3]{cern2018}
Attié, D.; et al. Performances of a resistive Micromegas module for the Time Projection Chambers of the T2K Near Detector upgrade. {\em Nucl. Instrum. Meth. A} {\bf 2020}, {\em 957}, 163286.
\bibitem[4]{desy2019}
Attié, D.; et al. Characterization of resistive Micromegas detectors for the upgrade of the T2K Near Detector Time Projection Chambers. {\em Nucl. Instrum. Meth. A} {\bf 2022}, {\em 1025}, 166109.
\bibitem[5]{cern2022}
Attié, D.; et al. Analysis of test beam data taken with a prototype of TPC with resistive Micromegas for the T2K Near Detector upgrade. {\em Nucl. Instrum. Meth. A} {\bf 2023}, {\em 1052}, 168248.
\bibitem[6]{eram2023}
Ambrosi, L.; et al. Characterization of charge spreading and gain of encapsulated resistive Micromegas detectors for the upgrade of the T2K Near Detector Time Projection Chambers.{\em Nucl. Instrum. Meth. A} {\bf 2023} {\em 1056}, 168534.
\end{thebibliography}
| Poster prize | Yes |
|---|---|
| Given name | Matteo |
| Surname | Feltre |
| First affiliation | INFN Padova |
| Second affiliation | DFTSA, Università di Siena |
| Institutional email | matteo.feltre@pd.infn.it |
| Gender | Male |
| Collaboration (if any) | T2K |
