The design and performance of the FNAL high-energy polarized-beam facility Academic Article uri icon


  • A new polarized-proton and -antiproton beam with 185 GeV/c momentum has been built at Fermilab. The design uses the parity-nonconserving decays of lambda and antilambda hyperons to produce polarized protons and antiprotons, respectively, a beam-transport system that minimizes depolarization effects, and a set of twelve dipole magnets that rotate the beam-particle spin direction. A beam-tagging system determines the momentum and polarization of individual beam particles. This allows a selection of particles in definite intervals of momentum and polarization. Measurements performed by two different polarimeters showed that the beam is polarized and the determination of polarization by beam-particle tagging is verified. A new measurement of the analyzing power of large-xF 0 production may lead to another beam polarimeter. 1990.

published proceedings

  • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment

author list (cited authors)

  • Collaboration, T., Grosnick, D. P., Hill, D. A., Laghai, M. R., Lopiano, D., Ohashi, Y., ... Zanetti, A.

citation count

  • 47

complete list of authors

  • Collaboration, The FNAL-E581 704||Grosnick, DP||Hill, DA||Laghai, MR||Lopiano, D||Ohashi, Y||Shima, T||Spinka, H||Stanek, RW||Underwood, DG||Yokosawa, A||Lehar, F||de Lesquen, A||van Rossum, L||Carey, DC||Coleman, RN||Cossairt, JD||Read, AL||Schailey, R||Derevschikov, AA||Matulenko, Yu A||Meschanin, AP||Nurushev, SB||Rzaev, RA||Solovyanov, VL||Vasiliev, AN||Akchurin, N||Onel, Y||Imai, K||Makino, S||Masaike, A||Miyake, K||Nagamine, T||Tamura, N||Yoshida, T||Takashima, R||Takeutchi, F||Maki, T||Kuroda, K||Michalowicz, A||Shapiro, G||Tanaka, N||Salvato, G||Villari, A||Gazzaly, M||Luehring, FC||Miller, DH||Corcoran, MD||Nessi-Tedaldi, F||Nessi, M||Nguyen, C||Phillips, GC||Roberts, JB||White, JL||Pauletta, G||Birsa, R||Bradamante, F||Torre-Colautti, S Dalla||Georgi, M||Martin, A||Penzo, A||Schiavon, P||Zanetti, A

publication date

  • May 1990