A.T. Katramatou

Design and performance of a double-arm 180° spectrometer system for magnetic electron scattering from deuterium

Abstract The design and operation of a double-arm 180° spectrometer system for elastic and inelastic electron scattering from deuterium is described. The system consisted of a chicane of dipole magnets to transport an incident electron beam to a target, an upstream QQQDD spectrometer with a bend angle of 65° to analyze backscattered electrons, a downstream QQQDDDD spectrometer with a bend angle of 66° to detect recoil particles produced at 0°, and a movable beam dump. The large acceptance of the system allowed measurements of the deuteron magnetic elastic B(Q2) and inelastic W1(v, Q2) structure functions at high momentum transfers. The performance is compared to the predictions of a Monte Carlo simulation program.

Transverse inelastic electron scattering from the deuteron at high momentum transfers

Cross sections for 180° inelastic electron scattering from the deuteron were measured from the break‐up threshold to beyond the quasielastic peak for incident beam energies between 0.7 and 1.3 GeV, corresponding to 0.75≤Q2≤2.75 (GeV/c)2. The data are in reasonable agreement with nonrelativistic models that include final‐state interactions are meson exchange currents.

A-dependence of deep-inelastic electron scattering from nuclei

The deep inelastic electron scattering cross sections per nucleon sigma/sub A/ for d, He, Be, C, Al, Ca, Fe, Ag, and Au were measured in the kinematic range 0.09 less than or equal to x less than or equal to 0.9 and 2 less than or equal to Q/sup 2/ less than or equal to 15 (GEV/c)/sup 2/ using electrons with energies ranging from 8 to 24.5 GeV. The ratio sigma/sub A//sigma/sub d/ is consistent with unity in the range 0.1 < x < 0.3. For 0.3 < x < 0.8, the ratio decreases logarithmically with atomic weight A, or linearly with average nuclear density. No Q/sup 2/ dependence in the ratio was observed over the kinematic range of the data. 12 references.