Abstract for JLAB Technical Note 01-025
Relative acceptance profiles for the Hall A electron (i.e. "left") and hadron
(i.e. "right") spectrometers were obtained during a three day E94-004 run in October of
1999 (as a calibration for the d(e,e-p)n cross section measurements). The deconvolution of acceptance and physics cross section was accomplished by applying a fitting technique
to a series of white spectrum scans. The scans were performed by varying the magnetic
fields of each spectrometer by 2% per measurement for each of five measurements (for
a total of roughly 10%, comparable to the spectrometer's momentum acceptance). The
scans for the two spectrometers were done in parallel by acquiring prescaled data on
each. Simulations based on MCEEP with the magnetic/aperture model of J. LeRose give
reasonable agreement with the shapes extracted from data especially if the radius of Q3
is reduced from 0.30 m to 0.28 m.
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