Difference between revisions of "2018 Data - Analysis Page"

Latest revision as of 10:47, 6 October 2021

Target configuration report
- Note: cryotargets need to subtract window thickness and apply a correction of 0.996 due to length contraction at low temperature
Target ladder survey
- Note: z position of "raster target" is upstream face. All solid targets have upstream face at same psoition.
Solid target notes
- Note: I think there was a transcription error for the carbon target. The report says 0.5244 g/cm2. I get 0.5224 g/cm2 from the notes above.
Beam and target offsets:
- Analysis of SHMS/HMS C data (log entry needed)
- Offsets to put in MC (from email from Abishek)
  - x-spec offset = -0.127 cm (updated from + to - 5/21/2021)
  - y-spec offset = -0.057 cm
  - x-beam offset = (0.073 - x-bpm) cm (xbpm calculated in right handed coordinate system)
  - z-target offset = 0.212 cm (carbon target)
    - LH2 1.55 mm upstream of carbon center: z = 0.057
    - LD2 1.45 mm upstream of carbon center: z = 0.067
    - Be 2.4 mm downstream of carbon center: z = 0.452
    - 10B4C and 11B4C at same z position as carbon: z = 0.212
How I get Boron from B4C: [1]

@@ Line 21: / Line 21: @@
 ===SHMS/HMS Cherenkov Gas Information===
-CO2 at 1 atm was the gas used in the SHMS noble gas Cherenkov.
+*CO2 at 1 atm was the gas used in the SHMS noble gas Cherenkov.
 https://logbooks.jlab.org/entry/3508688
-The HMS Cherenkov was filled with C4F8O at 0.45 atm.
+*The HMS Cherenkov was filled with C4F8O at 0.45 atm.
 https://logbooks.jlab.org/entry/3497989
@@ Line 52: / Line 52: @@
 * EMC only
 ** [https://hallcweb.jlab.org/elogs/X%3E1+%26+EMC/67 Isoscalar corrections]
-* Radiative corrections
+=== Radiative corrections ===
 ** [https://wiki.jlab.org/xem2wiki/images/f/f1/Dasu.pdf S.R. Dasu E140 thesis]
 ** [https://wiki.jlab.org/xem2wiki/images/1/17/Tsai_rc_slac-pub-0848.pdf Yung-Su Tsai SLAC not on radiative corrections]