POSITIVE ELECTRONS, which offer interesting comparisons with negative electrons and can be a useful source of photons, may be made by pair production in a target placed in the electron path of a linear accelerator. Greater intensity can be achieved by acceleration, by a coaxial solenoid, with magnetic quadrupoles or by a solenoid‐quadrupole combination. One important application of these positron beams is the production of “tertiary” beams of annihilation photons that can provide a partially monochromatic photon beam. Other applications include positron‐proton and electron‐proton scattering comparisons and colliding‐beam experiments in which electrons are injected at high energies into storage rings.
REFERENCES
1.
2.
J. A.
Poirier
, D. M.
Bernstein
, J.
Pine
, Phys. Rev.
117
, 557
(1960
).3.
4.
5.
6.
R. L.
Anderson
, B.
Borgia
, G. L.
Cassidy
, J. W.
DeWire
, A. S.
Ito
, E. C.
Loh
, Phys. Rev. Letters
17
, 407
(1966
).7.
A. DeHollan, E. Engels, B. Knapp, L. Hand, Proceedings of the XIIIth International Conference on High‐Energy Physics, Berkeley (1966).
8.
W. Bartel, B. Dudelzak, H. Krehbiel, J. M. McElroy, R. J. Morrison, W. Schmidt, V. Walther, G. Weber, DESY 67/22 (1967).
9.
B. Bouquet, D. Benaksas, B. Grossetète, B. Jean‐Marie, G. Parrour, J. P. Poux, R. Tchapoutian, Laboratoire de l'Accélérateur Linéaire Report LAL 1183 (1967).
10.
J.
Mar
, B. C.
Barish
, J.
Pine
, D. H.
Coward
, H.
DeStaebler
, J.
Litt
, A.
Minten
, R. E.
Taylor
, M.
Breidenbach
, Bull. Am. Phys. Soc.
13
, no. 4
, 636
(1968
);J.
Mar
, B. C.
Barish
, J.
Pine
, D. H.
Coward
, H.
DeStaebler
, J.
Litt
, A.
Minten
, R. E.
Taylor
, M.
Breidenbach
, Phys. Rev. Letters
21
, 482
(1968
).11.
12.
13.
14.
Proceedings of the International Symposium on Electron and Positron Storage Rings, Saclay, France, 26–30 September 1966.
15.
16.
J. T.
Caldwell
, R. R.
Harvey
, R. L.
Bramblett
, S. C.
Fultz
, Phys. Letters
6
, 213
(1963
).17.
18.
J. Miller, C. Schuhl, G. Tamas, C. Tzara, in “Contributions to the Karlsruhe Photonuclear Conference,” Karlsruhe, Germany, 18–22 August 1960.
19.
H. Brechna, K. E. Breymayer, K. G. Garney, H. DeStaebler, R. H. Heln, C. T. Hoard, in The Stanford Two‐Mile Accelerator, R. B. Neal, ed., W. A. Benjamin, Inc., New York, (1968).
20.
J. Ballam, G. Chadwick, Z. Guiragossián, D. Leith, R. R. Larsen, S. Williams, “The SLAC Monochromatic Photon Beam,” to be published.
This content is only available via PDF.
© 1969 American Institute of Physics.
1969
American Institute of Physics
You do not currently have access to this content.
