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ISSN - 01689002, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1983, vol. 219, p. 5-24

COLLIDING gamma e AND gamma gamma BEAMS BASED ON SINGLE-PASS e** plus e** minus ACCELERATORS II. POLARIZATION EFFECTS, MONOCHROMATIZATION IMPROVEMENT.

Ginzburg I. F., Kotkin G. L., Panfil S. L., Serbo V. G., Telnov V. I.

Polarization effects are considered in colliding gamma e and gamma gamma beams, which are proposed to be obtained on the basis of linear e** plus e** minus colliders (by backward Compton scattering of laser light on electron beams). It is shown that using electrons and laser photons with helicities lambda and P//c, such that lambda P//c less than 0, essentially improves the monochromatization. The characteristic laser flash energy, A//0, which is necessary to obtain a conversion coefficient k approximately equals 1 with a definite degree of monochromatization, is considerably less (sometimes by one order of magnitude) in the case 2 lambda P//c equals minus 1 in contrast to the case lambda P//c equals 0. Simultaneously the luminosities L// gamma //e and L// gamma // gamma essentially increase.