Recoil detection with a polarized He-3 target

D.W. Higinbotham*, R. Alarcon, H. Bauer, D.J. Boersma, J.F.J. van den Brand, H.J. Bulten, L.D. van Buuren, R. Ent, M. Ferro-Luzzi, D. Geurts, M. Harvey, P. Heimberg, B.E. Norum, I. Passchier, H.R. Poolman, E. Six, M.F.M. Steenbakkers, D. Szczerba, H. de Vries

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The ultra-thin gas targets used in storage ring internal target experiments allow low energy, heavy nuclei to emerge from the target region. A detector capable of analyzing these nuclei provides unique access to many nuclear reactions. We report here the first use of such a detector in conjunction with a polarized He-3 internal target and a polarized electron beam. The results of using the detector as a luminosity monitor and as a polarimeter to measure the product of beam and target polarizations are presented. The ability to study coherent pion production via the reactions 3 (H) over right arrow e((e) over right arrow,e'' He-3)pi(0) and 3 (H) over right arrow e((e) over right arrow,e'' H-3)pi(+) is shown along with the ability of the detector to unambiguously separate the two- and threebody breakup channels of the reaction 3 (H) over right arrow e((e) over right arrow,e'' p). (C) 2000 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)557-568
Number of pages12
JournalNuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Issue number3
Publication statusPublished - 21 Apr 2000
Externally publishedYes


  • recoil detection
  • polarized internal target
  • polarized electrons
  • AMPS

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