Author Affiliations

G. Harigel,¹ C. Baltay,² M. Bregman,^2,3 M. Hibbs,^2,3 A. Schaffer,^2,4 H. Bjelkhagen,^5,6 J. Hawkins,⁵ W. Williams,⁵ P. Nailor,⁷ R. Michaels,⁸ and H. Akbari⁹

¹CERN, CH-1211 Geneva 23, Switzerland.

²When this work was done C. Baltay, M. Bregman, M. Hibbs, and A. Schaffer were with Columbia University, Nevis Laboratories, Irvington, New York 10533 USA

³M. Bregman and M. Hibbs are now with IBM T.J. Watson Research Center, Yorktown Heights, New York 10598

⁴A. Schaffer is now with CERN, CH-1211 Geneva 23, Switzerland.

⁵H. Bjelkhagen, J. Hawkins, and W. Williams were all with Fermilab, Batavia, Illinois 60510 when this work was done USA

⁶H. Bjelkhagen is now with Northwestern University, Evanston, Illinois 60201.

⁷When this work was done P. Nailor was with Imperial College, London, SW7, U.K.; he is now with P. A. Technology, Cambridge Laboratory, Melbourn, Herts. SG8 6DP, U.K.

⁸When this work was done R. Michaels was with Rutgers University, New Brunswick, New Jersey 08903; he is now with Hewlett Packard, Palo Alto, California 94304.

⁹Tufts University, Med-ford, Massachusetts 02155. USA

G. Harigel also holds an appointment with Columbi University. H. Bjelkhagen is on leave of absence from the Division of Production Engineering of the Royal Institute of Technology (Sweden).