A Gas Target Internal to the LHC for the Study of pp Single-Spin Asymmetries and Heavy Ion Collisions

Figure 2

Results of the target analysis for the HERMES 2002/03 data taking period with transverse proton polarization as number of days, since August 1, 2002 (taken from [8]): (a) degree of dissociation α measured by the TGA (α = 1: no molecules); (b) positive and negative vector polarization of the sampled atomic part as measured by the BRP. During data taking the states of opposite sign are set periodically with a cycle time of the order of 1 min.

(a)

(b)