The BLAST experiment

D. Hasell, T. Akdogan, Ricardo Alarcon, W. Bertozzi, E. Booth, T. Botto, J. R. Calarco, B. Clasie, C. Crawford, A. DeGrush, K. Dow, D. Dutta, M. Farkhondeh, R. Fatemi, O. Filoti, W. Franklin, H. Gao, E. Geis, S. Gilad, W. HersmanM. Holtrop, E. Ihloff, P. Karpius, J. Kelsey, M. Kohl, H. Kolster, S. Krause, T. Lee, A. Maschinot, J. Matthews, K. McIlhany, N. Meitanis, R. Milner, J. Rapaport, R. Redwine, J. Seely, A. Shinozaki, A. Sindile, S. Širca, T. Smith, S. Sobczynski, M. Tanguay, B. Tonguc, C. Tschalaer, E. Tsentalovich, W. Turchinetz, J. F J van den Brand, J. van der Laan, F. Wang, T. Wise, Y. Xiao, W. Xu, C. Zhang, Z. Zhou, V. Ziskin, T. Zwart

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


The Bates large acceptance spectrometer toroid (BLAST) experiment was operated at the MIT-Bates Linear Accelerator Center from 2003 until 2005. The detector and experimental program were designed to study, in a systematic manner, the spin-dependent electromagnetic interaction in few-nucleon systems. As such the data will provide improved measurements for neutron, proton, and deuteron form factors. The data will also allow details of the reaction mechanism, such as the role of final state interactions, pion production, and resonances to be studied. The experiment used: a longitudinally polarized electron beam stored in the South Hall Storage Ring; a highly polarized, isotopically pure, internal gas target of hydrogen or deuterium provided by an atomic beam source; and a symmetric, general purpose detector based on a toroidal spectrometer with tracking, time-of-flight, Cherenkov, and neutron detectors. Details of the experiment and operation are presented.

Original languageEnglish (US)
Pages (from-to)247-262
Number of pages16
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - May 21 2009


  • Cherenkov detector
  • Polarized beam
  • Polarized target
  • Scintillator detector
  • Storage ring
  • Tracking detector

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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