S-2S Wiki

About 3D CAD drawing of S-2S magnet
- About installation of Autodesk Inventor Professional.
- 3D CAD file made by T.Takahashi was uploaded.
Web page of a text experiment for prototype WC detector @ELPE has been updated.
Missing mass resolution simulation with CH2 target
- Effect of decayed particles on the energy loss correction of missing mass is being estimated (Coding is in progress).

Mente Carlo simulation study of tracking detectors (Geant4)
- Material + gas + (upstream) Drift Chamber + (downstream) Drift Chamber: dp/p = 5×10^-4 (FWHM)
- Material + gas + (upstream) Fiber scintillator + (downstream) Drift Chamber: dp/p = 6×10^-4 (FWHM)
  - Better momentum resolution is achievable with drift chambers than fiber scintillator.
- (note1: Effects of wires of the drift chambers were not taken into account in the simulation.)
- (note2: These results are for particles with momenta of 1.375 GeV/c.)
Anglular resolution: 2 mrad (FWHM)
Drift chambers (upstream)
- Location need to be checked.
- Repair @IQBRC ? / Construction ?
- Need to confirm required size.
PVAC (Aerogel Cerenkov detector for Proton Veto)
Momentum and angular distributions of protons from elastic scattering
- S-2S: protons from the elastic scattering are out of the acceptance.
- SKSMinus: protons from the elastic scattering are in the acceptance.
S-2S acceptance (map) for production points around target (x,y and z)

水チェレンコフ検出器試作機のELPHにおけるテスト実験のデータ解析
- In progress.
Preparation for presentation in Hawai meeting.
- Rough overview will be prepared by next week.