[Clascomment] OPT-IN:Precision measurement of g1 of the proton and the deuteron with 6 GeV electrons

[Stepan Stepanyan]

page 3, Fig. 1 - CED graph has two tracks, referred as "... a charged particle passing ..."
and both are positively charged tracks. It will be better to find a picture with negatively
charged track, better with an electron that will show CC hits too. Will be more relevant to the
presented work 

page 5, bullet 7 - what is the reason for the angle difference between part A and B&C. Is
this because of target position? if so, why target position matters. Relative position of the
interaction region and the heat shield and insulation should not depend on target position.
According to the statement on page 3, target was farther upstream for Part B&C than for A.
So angle limits due to CLAS acceptance should be lower for B&C than for A

page 5, bullet 8 - seems every other bullet have cut or selection value but this one. What was
the lower limit of scattering angle cut to avoid electrons passing through IC shielding and support

page 6, Fig. 3 and related text - it is confusing to quote "3-sigma difference from zero" while on
the plot it is ~0.028. How reader should figure out what is the sigma? sigma of what, asymmetry.
It looks like sigma of asymmetry much smaller than 0.009

page 7, first line after Eq.(6) - definition of N's is confusing, arrows parallel on one that called
"anti-parallel" while they are anti-parallel for another one (in parentheses) which is called parallel.
Is this definition correct? On page 14 in the first paragraph of Section IV, definition is different (correct)

page 10, second line - "... thin and and hence .." should be one "and"

page 14, Eq.(22) - why is the equation divided into two lines? if it has to be for 2-colimn
version of the paper, it is better to divide at +/-

page 19, line above Eq.(31) - it probably should be "The Dip can be understood ..." instead of "call"