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Title The CLAS12 Spectrometer at Jefferson Laboratory
Authors Volker Burkert, Latifa Elouadrhiri, Krishna Adhikari, Shankar Adhikari, Moskov Amaryan, David Anderson, Giovanni Angelini, Mary Ann Antonioli, Hamza Atac, Stephan Aune, Harutyun Avagyan, Carlos Ayerbe Gayoso, Nathan Baltzell, Luca Barion, Marco Battaglieri, Vitaly Baturin, Ivan Bedlinskiy, Fatiha Benmokhtar, Andrea Bianconi, Angela Biselli, Peter Bonneau, Francesco Bossu, Sergey Boyarinov, William Briscoe, William Brooks, Krister Bruhwel, Daniel Carman, Andrea Celentano, Gabriel Charles, Pierre Chatagnon, Taya Chetry, Guillaume Christiaens, Steven Christo, GIUSEPPE CIULLO, Brandon Clary, Philip Cole, Marco Contalbrigo, Merritt Cook, Volker Crede, Reynier Cruz Torres, R. Cuevas, Annalisa D'Angelo, Natalya Dashyan, Maxime Defurne, Alexandre Deur, Raffaella De Vita, Stefan Diehl, Chaden Djalali, Gail Dodge, Raphael Dupre, Mathieu Ehrhart, Lamiaa El Fassi, Brian Eng, Jeffrey Ewing, Ruben Fair, Gleb Fedotov, Alessandra Filippi, Tony Forest, Michel Garcon, Gagik Gavalian, Probir Ghoshal, Gerard Gilfoyle, Kevin Giovanetti, Francois-Xavier Girod-Gard, Derek Glazier, Evgeny Golovach, Ralf Gothe, Yuri Gotra, Keith Griffioen, Michel Guidal, Vardan Gyurjyan, Kawtar Hafidi, Hayk Hakobyan, Charles Hanretty, Nathan Harrison, Mohammad Hattawy, Florian Hauenstein, Timothy Hayward, David Heddle, Pierre Hemler, Or Chen, Ken Hicks, Adam Hobart, John Hogan, Maurik Holtrop, Yordanka Ilieva, Izzy Illari, Denwood Insley, David Ireland, Boris Ishkhanov, Evgeny Isupov, George Jacobs, Hyon-Suk Jo, Robert Johnston, Kyungseon Joo, Sylvester Joosten, Tsuneo Kageya, David Kashy, Christopher Keith, Dustin Keller, Mariana Khachatryan, Achyut Khanal, Andrey Kim, Chan Kim, Wooyoung Kim, Valery Kubarovsky, Sebastian Kuhn, Lucilla Lanza, Mindy Leffel, Vincenzo Lucherini, Allison Lung, Md Latiful Kabir, Marco Leali, Sangbaek Lee, Paolo Lenisa, Kenneth Livingston, Michael Lowry, Ian MacGregor, Irakli Mandjavidze, Dominique Marchand, Nikolay Markov, Valerio Mascagna, Bryan McKinnon, Marc Mcmullen, Calvin Mealer, Mac Mestayer, Zein-Eddine Meziani, Robert Miller, Richard Milner, Taisiya Mineeva, Marco Mirazita, Viktor Mokeev, Patrick Moran, Aram Movsisyan, Carlos Munoz Camacho, Paul Naidoo, Shirsendu Nanda, Joseph Newton, Silvia Niccolai, Gabriel Niculescu, Mikhail Osipenko, Michael Paolone, Luciano Pappalardo, Rafayel Paremuzyan, Orlando Pastor, Eugene Pasyuk, William Phelps, Oleg Pogorelko, Jiwan Poudel, John Price, Katheryne Price, Sebastien Procureur, Yelena Prok, Dan Protopopescu, Renuka Rajput-Ghoshal, Brian Raue, Benjamin Raydo, Marco Ripani, James Ritman, Alessandro Rizzo, Guenther Rosner, Patrizia Rossi, Joseph Rowley, Bidyut Roy, Franck Sabatie, Carlos Salgado, Susan Schadmand, Axel Schmidt, Efrain Segarra, Viktoriya Sergeyeva, Youri Sharabian, Utsav Shrestha, Iuliia Skorodumina, Gregory Smith, Lee Smith, Daria Sokhan, Orlando Soto Sandoval, Nikolaos Sparveris, Stepan Stepanyan, Paul Stoler, Steffen Strauch, Joshua Artem Tan, M. Taylor, Douglas Tilles, Matteo Turisini, Nicholas Tyler, Maurizio Ungaro, Luca Venturelli, Hakob Voskanyan, Eric Voutier, Daniel Watts, Xiangdong Wei, Lawrence Weinstein, Cyril Wiggins, Mark Wiseman, Michael Wood, Amrit Yegneswaran, Glenn Young, Nicholas Zachariou, Michael Zarecky, Jixie Zhang, Zhiwen Zhao, Veronique Ziegler
JLAB number (None)
LANL number (None)
Other number (None)
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
 

Journal
Compiled for Nuclear Instruments & Methods in Physics Research, Section A
Volume 959
Page(s) 163419
Refereed
Publication Abstract: The CEBAF Large Acceptance Spectrometer for operation at 12 GeV beam energy (CLAS12) in Hall B at Jefferson Laboratory is used to study electro-induced nuclear and hadronic reactions. This spectrometer provides efficient detection of charged and neutral particles over a large fraction of the full solid angle. CLAS12 has been part of the energy-doubling project of Jefferson Lab’s Continuous Electron Beam Accelerator Facility, funded by the United States Department of Energy. An international collaboration of 48 institutions contributed to the design and construction of detector hardware, developed the software packages for the simulation of complex event patterns, and commissioned the detector systems. CLAS12 is based on a dual-magnet system with a superconducting torus magnet that provides a largely azimuthal field distribution that covers the forward polar angle range up to 35 ? , and a solenoid magnet and detector covering the polar angles from 35° to 125° with full azimuthal coverage. Trajectory reconstruction in the forward direction using drift chambers and in the central direction using a vertex tracker results in momentum resolutions of < 1% and < 3%, respectively. Cherenkov counters, time-of-flight scintillators, and electromagnetic calorimeters provide good particle identification. Fast triggering and high data-acquisition rates allow operation at a luminosity of 1035 cm ?2 s ?1 . These capabilities are being used in a broad program to study the structure and interactions of nucleons, nuclei, and mesons, using polarized and unpolarized electron beams and targets for beam energies up to 11 GeV. This paper gives a general description of the design, construction, and performance of CLAS12.
Experiment Numbers:
Group: Hall B
Document:
DOI: https://doi.org/10.1016/j.nima.2020.163419
Accepted Manuscript:
Supporting Documents:
Supporting Datasets: