Feasibility study of experiments to measure inclusive reactions at large x/sub F/ in ISABELLE's small-angle hall

As a way of testing current ideas on the construction of experimental halls at ISABELLE, a particular class of experiments suggested for the small-angle (or 2 o' clock) hall, p + p ..-->.. p + X and p + p ..-->.. c + X, c not equal to p is examined. The result of this examination is that inclusive single-particle experiments are feasible over a suitable kinematic range without the use of previously proposed special insertion quadrupoles. The forward single-arm spectrometer is housed in a separate tunnel of modest transverse dimension. The extraction of scattered particles (theta greater than or equal to 1 mrad) into the spectrometer is accomplished with Lambertson septa and current sheet septa. Provision is made for overlap with the kinematic region covered by ISR and Fermilab experiments. The physics objectives of such experiments are reviewed first. Then the general layout of the apparatus is described, with special emphasis on the extraction system and the spectrometer. A guess at how this experiment would fit into the overall small-angle physics program is presented. 5 figures. (RWR)