The CLAS12 Forward Tagger

A. Acker (1) , D. Attié (1) , S. Aune (1) , J. Ball (1) , P. Baron (1) , M. Bashkanov , M. Battaglieri , R. Behary , F. Benmokhtar , A. Bersani , Q. Bertrand (1) , D. Besin (1) , T. Bey (1) , P. Black , P. Bonneau , F. Bossù (1) , R. Boudouin (1) , M. Boyer (1) , P. Campero Rojas , A. Casale , A. Celentano , R. Cereseto , A. Ciarma , F. Cipro , G. Charles (1) , G. Christiaens (1) , P. Contrepois (1) , M. Cook , A. d'Angelo , R. de Vita , M. Defurne (1) , E. Delagnes (1) , E. Fanchini , S. Fegan , J. Fleming , A. Filippi , M. Garçon (1) , F. Georges (1) , K.L. Giovanetti , D.I. Glazier , R. Granelli (1) , N. Grouas (1) , K. Hicks , A. Hoebel , S.M. Hughes , C. Lahonde (1) , L. Lanza , M. Leffel , T. Lerch (1) , T. Lemon , K. Livingston , A. Manco , I. Mandjavidze (1) , H.S. Mann , B. Mckinnon , O. Meunier (1) , R. Miller , G. Miní , Y. Mouden (1) , P. Musico , M. Osipenko , G. Ottonello , F. Parodi , E. Pasyuk , P. Pollovio , F. Pratolongo , S. Procureur (1) , R. Puppo , C. Rossi , M. Riallot (1) , M. Ripani , A. Rizzo , F. Sabatié (1) , C. Salgado , G.D. Smith , D. Sokhan , I. Stankovic , M. Taiuti , A. Trovato , M. Vandenbroucke (1) , V. Vigo , E. Virique (1) , D. Watts , C. Wiggins , N. Zachariou , L. Zana

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

This document presents the technical layout and the performance of the CLAS12 Forward Tagger (FT). The FT, composed of an electromagnetic calorimeter based on PbWO 4 crystals (FT-Cal), a scintillation hodoscope (FT-Hodo), and several layers of Micromegas trackers (FT-Trk), has been designed to detect electrons and photons scattered at polar angles from 2 ∘ to 5 ∘ and to meet the physics goals of the hadron spectroscopy program and other experiments running with the CLAS12 spectrometer in Hall B.

Mots clés: Hadron spectroscopy; Low-Q 2 electron scattering; Electromagnetic calorimeter; PbWO 4; APD; Hodoscope; Plastic scintillator; WLS fibers; SiPM; Gas tracking detector; MicroMegas; Low-Q2 electron scattering; PbWO4; activity report; calorimeter: electromagnetic; scintillation counter: hodoscope; forward spectrometer; performance; Micromegas; detector: design; lead; tungsten: oxygen; photon: particle identification; electron: particle identification

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

A. Acker, D. Attié, S. Aune, J. Ball, P. Baron, et al.. The CLAS12 Forward Tagger. Nucl.Instrum.Meth.A, 2020, 959, pp.163475. ⟨10.1016/j.nima.2020.163475⟩. ⟨hal-02491281⟩