Beam test performance of the highly granular SiW-ECAL technological prototype for the ILC

K. Kawagoe , Y. Miura , I. Sekiya , T. Suehara , T. Yoshioka , S. Bilokin (1) , J. Bonis (1) , P. Cornebise (1) , A. Gallas (1) , A. Irles (1) , R. Pöschl (1) , F. Richard (1) , A. Thiebault (1) , D. Zerwas (1) , M. Anduze (2) , V. Balagura (2) , V. Boudry (2) , J-C Brient (2) , E. Edy (2) , G. Fayolle (2) , M. Frotin (2) , F. Gastaldi (2) , R. Guillaumat (2) , A. Lobanov (2) , M. Louzir (2) , F. Magniette (2) , J. Nanni (2) , M. Rubio-Roy (2) , K. Shpak (2) , H. Videau (2) , D. Yu (2) , S. Callier (3) , F. Dulucq (3) , C. de La Taille (3) , N. Seguin-Moreau (3) , J.E. Augustin (4) , R. Cornat (4) , J. David (4) , P. Ghislain (4) , D. Lacour (4) , L. Lavergne (4) , J.M. Parraud (4) , J.S. Chai , D. Jeans

1 LAL - Laboratoire de l'Accélérateur Linéaire
2 LLR - Laboratoire Leprince-Ringuet
3 OMEGA - Organisation de Micro-Électronique Générale Avancée
4 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies

The technological prototype of the CALICE highly granular silicon–tungsten electromagnetic calorimeter (SiW-ECAL) was tested in a beam at DESY in 2017. The setup comprised seven layers of silicon sensors. Each layer comprised four sensors, with each sensor containing an array of 256 5.5×5.5 mm 2 silicon PIN diodes. The four sensors covered a total area of 18 × 18 cm and comprised a total of 1024 channels. The readout was split into a trigger line and a charge signal line. Key performance results for signal over noise for the two output lines are presented, together with a study of the uniformity of the detector response. Measurements of the response to electrons for the tungsten loaded version of the detector are also presented.

Mots clés: Calorimeter methods; calorimeters; Si and pad detectors; Calorimeters; calorimeter: electromagnetic; performance; CALICE; noise; DESY Lab

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

K. Kawagoe, Y. Miura, I. Sekiya, T. Suehara, T. Yoshioka, et al.. Beam test performance of the highly granular SiW-ECAL technological prototype for the ILC. Nucl.Instrum.Meth.A, 2020, 950, pp.162969. ⟨10.1016/j.nima.2019.162969⟩. ⟨hal-02065798⟩