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4 results on '"M. J. J. van den Putte"'

1. Experiments with longitudinally polarized electrons in a storage ring, using a Siberian snake

Author

F. Kroes, R. Ent, H. J. Bulten, G. Luijckx, J. F. J. van den Brand, M. Ferro-Luzzi, M. Harvey, E. Six, H. de Vries, M. J. J. van den Putte, P.W. van Amersfoort, H. Boer Rookhuizen, Igor Nesterenko, Yu. M. Shatunov, D. Boersma, J.G. Noomen, B. E. Norum, B. L. Militsyn, Ivan Koop, Ricardo Alarcon, J. J. M. Steijger, H. R. Poolman, P. Klimin, L.D. van Buuren, J. van der Laan, C. W. de Jager, D. Geurts, A. P. Lysenko, Th. S. Bauer, P. Heimberg, Dominik Szczerba, Igor Passchier, D. W. Higinbotham, and (Astro)-Particles Physics

Subjects
INTERNAL TARGET, Nuclear Theory, General Physics and Astronomy, Electron, PRECISION-MEASUREMENT, 01 natural sciences, 7. Clean energy, ENERGY, Helium-3, 0103 physical sciences, Neutron, STRUCTURE-FUNCTION G(1)(N), 010306 general physics, Nuclear Experiment, Isotopes of helium, HE-3, Physics, 010308 nuclear & particles physics, Scattering, Polarization (waves), QUASI-ELASTIC SCATTERING, Charged particle, NEUTRON SPIN STRUCTURE, Physics::Accelerator Physics, Atomic physics, Storage ring
Abstract

We report on first measurements with polarized electrons stored in a medium-energy ring and with a polarized internal target. Polarized electrons were injected at 442 MeV (653 MeV), and a partial (full) Siberian snake was employed to preserve the polarization. Longitudinal polarization at the interaction point and polarization lifetime of the stored electrons were determined with laser backscattering. Spin observables were measured for electrodisintegration of polarized He-3, with simultaneous detection of scattered electrons, protons, neutrons, deuterons, and He-3 nuclei, over a large phase space.

Published
2000

2. Longitudinally polarized electrons in a storage ring below 1 GeV

Author

Douglas Higinbotham, Dominik Szczerba, H. Boer Rookhuizen, M. J. J. van den Putte, J. van der Laan, J.G. Noomen, C. de Jager, Igor Passchier, P. Klimin, B. E. Norum, Igor Nesterenko, Ricardo Alarcon, L.D. van Buuren, G. Luijckx, J. J. M. Steijger, Yu. M. Shatunov, Rolf Ent, E. Six, H. R. Poolman, Ivan Koop, A. P. Lysenko, P.W. van Amersfoort, B. L. Militsyn, J. F. J. van den Brand, P. Heimberg, M. Harvey, H. J. Bulten, D. Boersma, H. de Vries, Th. S. Bauer, D. Geurts, M. Ferro-Luzzi, and F. Kroes

Subjects
Physics, Nuclear Theory, Particle accelerator, Electron, Polarization (waves), law.invention, Nuclear physics, law, Physics::Accelerator Physics, Neutron, Beam shaping, Atomic physics, Beam (structure), Storage ring
Abstract

We report on the results of studies of the longitudinal electron polarization in the AmPS storage ring at NIKHEF. The ring was operated using a partial Siberian snake at the first magic energy, and a full Siberian snake between 440 MeV and 720 MeV. We have investigated the effect of high beam currents in the ring, and found that some of the electron polarization is lost if the beam current becomes larger than ≈120 mA.

Published
2000

3. A Compton backscattering polarimeter for measuring longitudinal electron polarization

Author

Tancredi Botto, H. J. Bulten, Th. Bauer, M.C. Bouwhuis, J. F. J. van den Brand, N. Papadakis, D. Boersma, H. R. Poolman, C. W. de Jager, Douglas Higinbotham, N. Vodinas, L.D. van Buuren, E. Six, B. E. Norum, Ricardo Alarcon, M. Ferro-Luzzi, J. J. M. Steijger, M. Harvey, D. Geurts, P. Heimberg, Rolf Ent, Dominik Szczerba, H. de Vries, M. J. J. van den Putte, and Igor Passchier

Subjects
Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Compton scattering, Polarimetry, Polarimeter, Particle accelerator, Electron, Polarization (waves), law.invention, Optics, law, Cathode ray, Physics::Accelerator Physics, business, Storage ring
Abstract

Compton backscattering polarimetry provides a fast measurement of the polarization of an electron beam in a storage ring. Since the method is nondestructive, the polarization of the electrons can be monitored during internal target experiments. At NIKHEF a Compton polarimeter has been constructed to measure the polarization of the longitudinally polarized electrons stored in the AmPS ring. First results obtained with the polarimeter, the first Compton polarimeter to measure the polarization of a stored longitudinally polarized electron beam, are presented in this paper.

Published
1998

4. Status of a facility for measuring nuclear recoils by neutron scattering from cryogenic particle detectors

Author

E. Esposito, T.J Giles, C Hoess, Lawrence Angrave, S Wänninger, R. J. Gaitskell, G.L. Salmon, Susan Cooper, E.P. Houwman, M. J. J. van den Putte, and N.E. Booth

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Detector, Dark matter, Nuclear Theory, Cryogenic particle detectors, Physics::Accelerator Physics, Neutron scattering, Nuclear Experiment, Instrumentation
Abstract

We are setting up a dedicated neutron-scattering facility in order to study the response of cryogenic detectors to nuclear recoils in preparation for dark matter searches. The design and status of the facility are presented.

Published
1996

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