High Energy Spin Physics: Volume 1: Conference Report by C. D. Jeffries (auth.), Professor Dr. Karl-Heinz Althoff,

By C. D. Jeffries (auth.), Professor Dr. Karl-Heinz Althoff, Priv. Doz. Dr. Werner Meyer (eds.)

The ninth overseas Symposium on excessive strength Spin Physics, held in Bonn, 6-15 September 1990, attracted 280 individuals from sixteen nations. This meet­ ing lined not just basic experimental and theoretical spin phenomena but in addition technological advancements in polarized beams and objectives. For the 1st time intermediate strength spin physics with electron machines used to be mentioned generally. Highlights integrated the paintings on polarized excessive strength electron beams at LEP and TRISTAN and the failure of the traditional version in reference to spin phenomena, particularly the expansion of the spin asymmetry in violent proton-proton scattering. additionally the presentation of other versions in con­ nection with the still-unsolved 'proton spin challenge' and the proposals for 4 diversified experiments to figure out the spin constitution capabilities brought on full of life and occasionally arguable discussions. The Organizing Committee want to thank all audio system for his or her excel­ lent talks, the conveners for the association of the parallel classes, and the overseas Advisory Committee for his or her recommendation. 4 workshops preceded the symposium. one hundred sixty individuals, between them many younger physicists, mentioned as a rule technological spin difficulties. those papers are released in separate lawsuits. We gratefully recognize the enthusiastic support of the contributors of our institute in getting ready and working the convention and the workshops, specifically Mrs. D. FaSbender, Mrs. E. Wendorf, Mrs. J. Wetzel, and Dr. U.Idschok.

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40 60 Time (min) 80 Fig. 12 The improved elastic spectrometer in the 24 GeV beam. We then installed this target in our spectrometer at the AGS as shown in Fig. 12. The spectrometer had bending magnets in both the forward arm and the recoil arm; both arms also contained scintillation counter hodoscopes. Because of the very high beam intensity our experiment was surrounded by three meters of concrete shielding; the luminosity was about 1035 sec- 1 cm- 2 . We also made other changes such as installing two focusing quadrupoles in our spectrometer.

49, 248 (1967); 49, 259 (1967) • H. H. Atkinson, in Proc. Int. Conf. on Polarized Targets, ed. G. Shapiro (Berkeley, 1971), p. 41. Borghini, in Methods in Subnuclear Physics, Vol. IV, Part 2, ed. M. Nikoll1 (Gordon and Breach, New York, 1970), p. 191. W. de Boer and T. O. Niinikoski, Nucl. Instr. and Meth. 114, 495 (1974). T. O. Niinikoski and F. Udo, Nucl. Instr. and Meth. 134,~9 (1976). T. O. NUnikoski, in Proc. Symp. on High Energy Physics with Polarized Beams and Targets, Argonne, 1976, ed.

Lr ~ ... :.... ,. 3. 2 (GeV/c)2. 2. THE SINGLE-SPIN ASYMMETRY MEASUR»4ENTS IN THE BINARY CHARGE-EXCHANGE REACTIONS. We had spent 8 years after HERA experiment before starting the PROZA program. By USing this polarized proton target the PROZA Collaboration has measured the single-spin asymmetries at 40 GeV/c in the following charge-exchange exclusive reactions: 38 ~- + PA = ~ + PA ~- =~ + n, (6) n, (7) + ~- + PA =~' + n, (8) (9) (11 ) (10) '11: +P ... 4. Let us discuss each reaction separately.

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