Design Overview of the JLab RTPC
Jefferson Lab
Experiment E03-012 (Summary,
full
proposal) has been
approved to study the neutron structure using the spectator tagging
technique in Experimental Hall B.
The collaboration is developing a Radial
Time Projection Chamber (RTPC) detector for the spectator
protons which will allow it to associate them with electron scattering
vertices in a high pressure gas (7 atm.) target cell. By measuring the
scattered electron in Hall-B's CEBAF Large Acceptance Spectrometer (CLAS)
and the spectator proton in the Bonus
RTPC, the experiment can completely determine the initial
four-momentum
of the struck neutrons and the kinematic variables x, W describing the scattering. Tracks
in CLAS and in the RTPC will be connected on the basis of both timing
and position information from the two detector systems.
Additional information can be found at the following links:
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