학술논문
The tracking detector of the FASER experiment
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article
Author
Collaboration, FASER; Abreu, Henso; Antel, Claire; Ariga, Akitaka; Ariga, Tomoko; Bernlochner, Florian; Boeckh, Tobias; Boyd, Jamie; Brenner, Lydia; Cadoux, Franck; Casper, David W; Cavanagh, Charlotte; Chen, Xin; Coccaro, Andrea; Crespo-Lopez, Olivier; Dmitrievsky, Sergey; D'Onofrio, Monica; Dozen, Candan; Ezzat, Abdallah; Favre, Yannick; Fellers, Deion; Feng, Jonathan L; Ferrere, Didier; Gibson, Stephen; Gonzalez-Sevilla, Sergio; Gornushkin, Yuri; Gwilliam, Carl; Hsu, Shih-Chieh; Hu, Zhen; Iacobucci, Giuseppe; Inada, Tomohiro; Jakobsen, Sune; Kajomovitz, Enrique; Kling, Felix; Kose, Umut; Kuehn, Susanne; Lefebvre, Helena; Levinson, Lorne; Li, Ke; Liu, Jinfeng; Magliocca, Chiara; McFayden, Josh; Milanesio, Matteo; Meehan, Sam; Mladenov, Dimitar; Moretti, Theo; Munker, Magdalena; Nakamura, Mitsuhiro; Nakano, Toshiyuki; Nessi, Marzio; Neuhaus, Friedemann; Nevay, Laurie; Otono, Hidetoshi; Pandini, Carlo; Pang, Hao; Paolozzi, Lorenzo; Petersen, Brian; Pietropaolo, Francesco; Prim, Markus; Queitsch-Maitland, Michaela; Resnati, Filippo; Rizzi, Chiara; Rokujo, Hiroki; Ruiz-Choliz, Elisa; Salfeld-Nebgen, Jakob; Sato, Osamu; Scampoli, Paola; Schmieden, Kristof; Schott, Matthias; Sfyrla, Anna; Shively, Savannah; Spencer, John; Takubo, Yosuke; Tarannum, Noshin; Theiner, Ondrej; Torrence, Eric; Tufanli, Serhan; Vasina, Svetlana; Vormwald, Benedikt; Wang, Di
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Abstract
FASER is a new experiment designed to search for new light weakly-interactinglong-lived particles (LLPs) and study high-energy neutrino interactions in thevery forward region of the LHC collisions at CERN. The experimental apparatusis situated 480 m downstream of the ATLAS interaction-point aligned with thebeam collision axis. The FASER detector includes four identical trackerstations constructed from silicon microstrip detectors. Three of the trackerstations form a tracking spectrometer, and enable FASER to detect the decayproducts of LLPs decaying inside the apparatus, whereas the fourth station isused for the neutrino analysis. The spectrometer has been installed in the LHCcomplex since March 2021, while the fourth station is not yet installed. FASERwill start physics data taking when the LHC resumes operation in early 2022.This paper describes the design, construction and testing of the trackingspectrometer, including the associated components such as the mechanics,readout electronics, power supplies and cooling system.