A new Q-Q-Clamshell magnetic spectrometer called SASP has been commissioned
in the proton hall at TRIUMF. The principal optical characteristics are: a
solid angle acceptance of 13.5 msr, a momentum bite of 25%, a momentum res
olution of Delta p/p = 2 x 10(-4), and a maximum central momentum of 720 Me
V/c. We describe the optical design: the magnetostatic design, the magnetic
field mapping procedure, and the performance of this instrument. (C) 1999
Elsevier Science B.V. All rights reserved.