C. Kormanyos

A Recoil Detector for electron scattering experiments with internal targets

Abstract A Recoil Detector has been constructed for electron-scattering experiments with gas targets internal to the Amsterdam Pulse Stretcher and storage ring (AmPS) at NIKHEF. The detector was designed to detect low-energy (1–10 MeV/nucleon) and low-mass (A ≤ 4) recoiling nuclei emerging from electron-induced reactions. It consists of four sensitive elements: a low-pressure two-step avalanche chamber, two layers of silicon strip detectors of 100 and 475 μm thickness, and a scintillator. The signals from the separate detector elements are processed by custom-made analog and digital electronics. The detector was operated successfully at the AmPS electron scattering facility with a gaseous helium target of 1015 atoms cm−2 internal to the storage ring and beam currents of up to 200 mA.

A recoil detector for the internal target facility of AmPS (NIKHEF)

A recoil detector has been built for internal target experiments with the Amsterdam Pulse Stretcher and storage ring, AmPS, of NIKHEF. The detector was designed to detect low-energy (1-20 MeV/nucleon) and low-mass (A ≤ 4) recoiling nuclei emerging from electron-induced reactions. The detector consists of a low-pressure, two-step avalanche chamber, two layers of silicon strip detectors of 100 and 475 μm thickness and a scintillator. The signals from the separate detector elements are processed by custom-made analog electronics and dedicated VME-based digitizer modules. The detector was operated successfully at the AmPS electron scattering facility with a gaseous He target of 10

Study of Proton-Neutron Correlations with the reaction 3,4He(e, e′d)

A 3,4He(e, e′d) experiment has been performed at NIKHEF. The data have been taken in both (q, ω)-constant kinematics and in parallel-kinematics for transferred momenta q of 410, 500 and 600 MeV/c using 576 MeV and 370 MeV electron beams. Preliminary results for 3He at 576 MeV are reported here. The (q, ω) constant results allow to extract the contribution of the structure function W LT from the cross section. The parallel kinematics results show an interesting q-dependence that cannot be described by a cluster-knockout model.