Clas Drift Chamber Alignment without Magnetic Field in Electron Beam
and Torus Field Issues.

K.Mikhailov,N.Pivnyuk

Run 8936. Drift time for 6 sectors

Drift distance vs drift time and resolution

Theta,X and Z alignment. Residual for electron and proton.

Difference between survey and alignment geometry.


ITEP geomerty map location: ~kmikhail/Maps/ITEP+s2s.txt

PRESENT geomerty map location: ~kmikhail/Maps/PRESENT+s2s.txt




Sector to sector alignment from ep-elastic.

Sector to sector alignment. Tables.

Torus field shifts.

W and E0 for run 8907 E0(MCC)=1.645 GeV