PHYSICS AND ASTRONOMY COLLOQUIUM

                   TUESDAY, SEPTEMBER 11, 2001
          4:10 p.m., Room 118 Physics-Astronomy Building
              Refreshments at 3:45 p.m. in Room 224

      (Note: From 3:15-3:45pm in Room 224, students can meet
            for an informal discussion with Dr. Krisch.)


VIOLENT COLLISIONS OF SPINNING PROTONS: PAST, PRESENT and FUTURE

A. D. Krisch
Randall Lab of Physics
University of Michigan
Ann Arbor, MI 48109-1120, U.S.A.

There will first be a review of: violent proton-proton collisions;
the history of polarized proton beams; and the unexpected, and still
unexplained, large transverse spin effects found in high transverse
momentum proton-proton spin experiments at the ZGS, AGS and Fermilab.
Next, there will be discussions about: Siberian snakes and their early
tests at the IUCF Cooler Ring; their future use for polarized proton and
electron beams at RHIC, MIT-Bates and possibly HERA. The final topic will
be the recently approved SPIN@U-70 Experiment on the spin dependence of
the violent collisions of 70 GeV protons at IHEP-Protvino near Moscow.