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The "BoNuS"
Radial Time Projection Chamber |
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This website is dedicated to information on a novel detector for the Physics program in Jefferson Lab's Hall B, the "BoNuS" Radial Time Projection Chamber (RTPC). This detector is being developed and built by a collaboration of Physicists at Jefferson Lab, Old Dominion University, Hampton University, the College of William and Mary, and James Madison University. It will be installed in the CEBAF Large Acceptance Spectrometer (CLAS) to detect recoil particles with momenta much below the present CLAS threshold of 250 MeV/c, in coincidence with the scattered electrons. This detector is necessary to execute the approved Physics program for CLAS, in particular the "BoNuS" experiment (E03-012 - Summary, full proposal) which was approved by PAC23 for 25 days at priority A-. For this experiment, we need to detect backward-going protons, with momenta as low as 70 MeV/c, from the reaction d(e,e'p)X, thereby "tagging" the initial state of the neutron on which the electron scattered. This will allow us, for the first time, to extract unambigously the structure function F2 and the form factors of a (nearly) free neutron. Additional information on this experiment can be found at the "BoNuS" website. More detailed information on the RTPC and its components can be found under the following links |
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maintained by Sebastian Kuhn (skuhn@odu.edu) updated February 25, 2004 |
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