[Hallc_sidis_analysis] W=3.3 runs

[Peter Bosted]

Aloha Witt et al.,
     We took data at W=3.3 (E=10.6, EP=3.307, ThHMS=19.68 deg) mostly
in Spring 2018 (runs 3925 to 4275), with Ppi = 1.9, 2.5, 3.3 covering 8 to 
18 degrees (plus a smaller range at two higher z settings).
    Then in Fall 2018 we took additional data with Ppi=3.3, this time 
starting at 6.5 deg. and going up to 12 deg (run 5889 to 5938). We don't 
seem to have any data at the two lower z setting (Ppi=1.9 and 2.6). The 
main purpose was to extend down to 6.5 deg and have overlap at Ppi=3.3 
with the spring 2018 for cross normalization.
    So, you can check your results at Ppi=3.3 (z=3.3/7.2) againt what is on 
the Hall C data table, but if you want the full range of z, I suggest to
use that table for lower z bins.
  One thing to note: for the 6.5 deg. angle, we had to run at very low beam 
currents on LD2 (lloks like 3muA for both pi+ and pi-). This pi- setting 
had the largest e- contamination of the pi- sample of any, as I recll, so 
be careful to check that looking at the e/p spectrum. Unlike Spring 2018, 
there was no Noble Gass detector in Fall 18 (which was helpful in e-/epi- 
spearation).
    Hope that helps, Peter


Prof. Peter Bosted
email: bosted at jlab.org
phone: (808) 756-5977 (cell)
P.O. Box 6254, Ocean View, HI 96737

On Wed, 29 Oct 2025, Dipangkar Dutta via Hallc_sidis_analysis wrote:

> Hi All,
> We will have our regular SIDIS analysis meeting tomorrow at noon
> 
> The Meeting URL is
> https://jlab-org.zoomgov.com/j/1612448446?pwd=ejQ1UnJxRHh2ajZmMEo4U3IvL2tmZ
> z09
> 
> Meeting ID: 161 244 8446 Passcode: 266172
> 
> Please plan on showing a few slides on your work and please upload the
> slides to the SIDIS elog at:
> https://hallcweb.jlab.org/elogs/SIDIS+Pt+and+CSV+Experiments+Analysis
> 
> 
> 
>  Cheers
> 
> Dipangkar
> 
>