Performances of a resistive Micromegas module for the Time Projection Chambers of the T2K Near Detector upgrade

D. Attié (1) , M. Batkiewicz-Kwasniak , J. Boix , S. Bolognesi (1) , S. Bordoni , D. Calvet (1) , M.G. Catanesi , M. Cicerchia , G. Cogo , P. Colas (1) , G. Collazuol , A. Dabrowska , A. Delbart (1) , J. Dumarchez (2) , S. Emery-Schrenk (1) , C. Giganti (2) , F. Gramegna , M. Guigue (2) , P. Hamacher-Baumann , F. Iacob , C. Jesus-Valls , U. Kose , R. Kurjata , N. Lacalamita , M. Lamoureux (1) , A. Longhin , T. Lux , L. Magaletti , T. Marchi , M. Mezzetto , J. Michalowski , J. Mundet , L. Munteanu (1) , Q.V. Nguyen (2) , M. Pari , J.-M Parraud (2) , C. Pastore , A. Pepato , B. Popov (2) , H. Przybilski , E. Radicioni , M. Riallot (1) , C. Riccio , S. Roth , A.C. Ruggeri , A. Rychter , F. Sánchez , J. Steinmann , S. Suvorov (1) , J. Swierblewski , D. Vargas , G. Vasseur (1) , T. Wachala , A. Zalewska , M. Ziembicki , M. Zito (1)

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies

An upgrade of the Near Detector of the T2K long baseline neutrino oscillation experiment, ND280, has been proposed. This upgrade will include two new Time Projection Chambers, each equipped with 16 resistive Micromegas modules for gas amplification. A first prototype of resistive Micromegas has been designed, built, installed in the HARP field cage, and exposed to a beam of charged particles at CERN. The data have been used to characterize the performances of the resistive Micromegas module. A spatial resolution of 300 μm and a deposited energy resolution of 9% were observed for horizontal electrons crossing the TPCs at 30 cm from the anode. Such performances fully satisfy the requirements for the upgrade of the ND280 TPC.

Mots clés: TPC; Micromegas; T2K; time projection chamber; near detector; upgrade; performance; KAMIOKANDE; spatial resolution; energy resolution

Domaines: Instrumentations et Détecteurs [physics.ins-det]

D. Attié, M. Batkiewicz-Kwasniak, J. Boix, S. Bolognesi, S. Bordoni, et al.. Performances of a resistive Micromegas module for the Time Projection Chambers of the T2K Near Detector upgrade. Nucl.Instrum.Meth.A, 2020, 957, pp.163286. ⟨10.1016/j.nima.2019.163286⟩. ⟨hal-02279096⟩