The SeaQuest spectrometer at Fermilab

C. A. Aidala, J. R. Arrington, C. Ayuso, B. M. Bowen, M. L. Bowen, K. L. Bowling, A. W. Brown, C. N. Brown, R. Byrd, R. E. Carlisle, T. Chang, W. C. Chang, A. Chen, J. Y. Chen, D. C. Christian, X. Chu, B. P. Dannowitz, M. Daugherity, M. Diefenthaler, J. DoveC. Durandet, L. El Fassi, E. Erdos, D. M. Fox, D. F. Geesaman, R. Gilman, Y. Goto, L. Guo, R. Guo, T. Hague, C. R. Hicks, R. J. Holt, D. Isenhower, X. Jiang, J. M. Katich, B. M. Kerns, E. R. Kinney, N. D. Kitts, A. Klein, D. Kleinjan, J. Kras, Y. Kudo, P. J. Lin, D. Liu, K. Liu, M. X. Liu, W. Lorenzon, N. C.R. Makins, J. D. Martinez, R. E. McClellan, B. McDonald, P. L. McGaughey, S. E. McNease, M. M. Medeiros, B. Miller, A. J. Miller, S. Miyasaka, Y. Miyachi, I. A. Mooney, D. H. Morton, B. Nadim, K. Nagai, K. Nakahara, K. Nakano, S. Nara, S. Obata, J. C. Peng, S. Prasad, A. J.R. Puckett, B. J. Ramson, R. S. Raymond, P. E. Reimer*, J. G. Rubin, R. Salinas, F. Sanftl, S. Sawada, T. Sawada, M. B.C. Scott, L. E. Selensky, T. A. Shibata, S. Shiu, D. Su, A. S. Tadepalli, M. Teo, B. G. Tice, C. L. Towell, R. S. Towell, S. Uemura, S. G. Wang, S. Watson, N. White, A. B. Wickes, M. R. Wood, J. Wu, Z. Xi, Z. Ye, Y. Yin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The SeaQuest spectrometer at Fermilab was designed to detect oppositely-charged pairs of muons (dimuons) produced by interactions between a 120 GeV proton beam and liquid hydrogen, liquid deuterium and solid nuclear targets. The primary physics program uses the Drell–Yan process to probe antiquark distributions in the target nucleon. The spectrometer consists of a target system, two dipole magnets and four detector stations. The upstream magnet is a closed-aperture solid iron magnet which also serves as the beam dump, while the second magnet is an open aperture magnet. Each of the detector stations consists of scintillator hodoscopes and a high-resolution tracking device. The FPGA-based trigger compares the hodoscope signals to a set of pre-programmed roads to determine if the event contains oppositely-signed, high-mass muon pairs.

Original languageEnglish
Pages (from-to)49-63
Number of pages15
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
StatePublished - 21 Jun 2019
Externally publishedYes


  • Drell–Yan
  • E906
  • J∕ψ
  • Muon
  • SeaQuest
  • Spectrometer


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