sFGD beam test analysis

Thursday 4 Feb 2021, 17:00 → 19:00 Europe/Zurich

 

https://stonybrook.zoom.us/j/7598419716?pwd=QmIyT0hwWkxkVWJwQnhmbDR6NVo1QT09

pass: letmein

 

17:00 → 17:20 Update on the xsec fitter

Speaker: Ciro Riccio (Stony Brook University (US))

Riccio_sfgdmeetingFeb42021.pdf

17:20 → 17:40 Update on the neutron energy scale systematics

Speaker: Abraham Meles Teklu (Stony Brook University (US))

February 4th Update.pdf

17:40 → 17:55 Status of efficiency correction

Speaker: Pooi Seong Chong

01_21_2021.pdf

17:55 → 18:10 Update on invisible scattering scaling

Speaker: Guang Yang (Stony Brook University)

LANL_invisible_Feb4_2021_gyang(1).pdf

18:10 → 18:20 Meeting Minutes

Speaker: Dr Ciro Riccio (Stony Brook University (US))

Attendees: Guang Yang (GY), Ciro  Riccio (CR), Chang Kee Jung (CKJ), Abraham Teklu (AT), Alex Ramirez (AR), Andriaseta Sitraka (AS), Eric Chong (EC), Ki-Young Jung (KYJ), Shih-Kai Lin (SL), Sunwoo Gwon (SG), Cesar Jusus Valls (CJV), Martini Tzanov (MT), Mikhail Danilov (MD), Nataliya Skrobova (NS), Perri Zilberman (PZ), Ki-Young Jung (KYJ), Christopher Mauger (CM)

 

Ciro Riccio - Updated on xsec fitter

• GY: Which energy binning? CR: It is 40 MeV. GY: We should make sure we don't cut the time tick, ie the energy binning must be unit of 2.4 ns. 

Abraham Teklu - Update on the neutron energy scale systematics

• CM: The width of the gamma peak? AT: 20-30 tick
• CM: It would be useful to look at the time structure from the beamline, the gamma flash may contain pi0 The gamma flash should essentially be peaked and provide us a time-resolution. The smearing effects are from detector.
• CKJ: Do we have enough statistics in high energy? AT: Yes.
• MD: What we know about the time calibration of different channel? GY: We didn't correct by the fiber length.
• CKJ: Many effect can contribute. GY: Fiber length is the major error. CKJ: But we know it very well. CM: We should decouple the effects. GY: We can use cosmics.
• MT: Resolution is very important, but also the bias. If you have a bias in time you bias the energy. How do you define the T0? GY: T0 is fixed for every channel.

Eric Chong - Status of efficiency correction

• CKJ: Why the correction should be a sys error? EC: Missed answers
• MD: If the MC is completely wrong you will not notice that. You should compare data and MC in different variables. GY&CKJ: Agree.

Guang Yang - Update on invisible scattering scaling

• CKJ: Slide 6: What do you mean with weight 0? GY: I remove all the event with elastic scattering. CKJ: Why does it grow as it goes it in the detector?GY: It could be a detector effect. CKJ: You need to figure this out.
• MD: Why invisible scattering is so important? GY: We have 20 PE threshold.
• CKJ: You can allineare your detector. GY: We know the detector is not straight. CKJ: You can measure it and take it out.