Eta photoproduction on the neutron at GRAAL: Measurement of the differential cross section

In this contribution, we will present our first preliminary measurement of the differential cross section for the reaction gamma+n->eta+n. Comparison of the reactions gamma+p->eta+p for free and bound proton (D2 target) will also be discussed.Comment: 6 pages, 4 figures, Proceedings of the 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, August 29-September 4 2004, Beijing, Chin

Design and performance of a silicon test counter for HERMES

A small silicon-detector array has been designed and constructed to investigate the prospects for large-angle tracking and detection of recoiling target fragments for the HERMES experiment at DESY in Hamburg, Germany. The array consists of a two-layered double-sided Silicon Test Counter (STC), which is used to study the feasibility of this technique. The STC has been installed below the center of the HERMES internal storage cell target inside the vacuum chamber, and is thus located in the vicinity of the high-intensity lepton beam of HERA. For the readout, a local front-end with 64-channel Analog Pipeline Chips (APC) has been employed. The large dynamic range of the APC allows for the identification and tracking of protons with momenta ranging from 100 to 600 MeV/c. The feasibility of the detector concept is shown, thus demonstrating that a multilayer silicon system can be used for the observation of recoiling protons produced in Deep Inelastic Scattering (DIS)

Design and performance of a silicon test counter for HERMES

A small silicon-detector array has been designed and constructed to investigate the prospects for large-angle tracking and detection of recoiling target fragments for the HERMES experiment at DESY in Hamburg, Germany. The array consists of a two-layered double-sided Silicon Test Counter (STC), which is used to study the feasibility of this technique. The STC has been installed below the center of the HERMES internal storage cell target inside the vacuum chamber, and is thus located in the vicinity of the high-intensity lepton beam of HERA. For the readout, a local front-end with 64-channel Analog Pipeline Chips (APC) has been employed. The large dynamic range of the APC allows for the identification and tracking of protons with momenta ranging from 100 to 600 MeV/c. The feasibility of the detector concept is shown, thus demonstrating that a multilayer silicon system can be used for the observation of recoiling protons produced in Deep Inelastic Scattering (DIS)

Design and performance of a silicon test counter for HERMES

A small silicon-detector array has been designed and constructed to investigate the prospects for large-angle tracking and detection of recoiling target fragments for the HERMES experiment at DESY in Hamburg, Germany. The array consists of a two-layered double-sided Silicon Test Counter (STC), which is used to study the feasibility of this technique. The STC has been installed below the center of the HERMES internal storage cell target inside the vacuum chamber, and is thus located in the vicinity of the high-intensity lepton beam of HERA. For the readout, a local front-end with 64-channel Analog Pipeline Chips (APC) has been employed. The large dynamic range of the APC allows for the identification and tracking of protons with momenta ranging from 100 to . The feasibility of the detector concept is shown, thus demonstrating that a multilayer silicon system can be used for the observation of recoiling protons produced in Deep Inelastic Scattering (DIS)