The High Momentum Spectrometer drift chambers in Hall C at CEBAF

Measurements of the neutron electric to magnetic form factor ratioGEn/GMnvia thePlaster1, Semenov2, Aghalaryan3 et al. 2006Phys. Rev. C

“…Drift chambers. The two multiwire drift chambers [61], used for tracking, each consist of six wire planes: (1) the X and X planes, which provide position information on the x coordinate (dispersive direction); (2) the Y and Y planes, which provide position information on the y coordinate (nondispersive direction); and (3) the U and V planes, which are inclined at ±15…”

Technical supplement to “Polarization transfer observables in elastic electron-proton scattering at Q2=2.5,5.2,6.<

“…The design of the HMS drift chamber pair is discussed in detail in Ref. [9]. The HMS tracking system consists of two identical planar drift chambers, spaced approximately 80 cm apart along the HMS optical axis.…”

Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2

“…[26]), scintillator arrays for triggering, and a threshold gas Čerenkov and electromagnetic calorimeters [27], which were both used for particle identification and pion rejection. More details on the two spectrometers and their detector packages can be found in Refs.…”