[JLab-seminars] Tomorrow's Physics Interview Seminar: Jiwan Poudel; Probing nuclei with Electron beam: SBS and CLAS12 Experiments

[Stephanie Tysor]

Physics Interview Seminar

Jiwan Poudel

Jefferson Lab



Probing nuclei with Electron beam: SBS and

CLAS12 Experiments



Abstract:



Nuclei consist of nucleons, and nucleon binding and interactions determine the

properties of nuclei as well as the dynamics of nuclear reactions. Scattering experiments

have played a crucial role in exploring the structure of nucleons. However, protons and

neutrons, nucleons, are not fundamental particles but are composed of quarks bound

by the exchange of gluons. High energy electron-beam and sophisticated spectrometers

serve as microscopes for investigating the core of matter, where the quarks and gluons

come together to build nucleons.



Jefferson Lab’s Linac provides high-intensity continuous electron beams up to 12

GeV to different halls. The electron beam is then impinged on the target, and the

scattered particles are detected using different spectrometers. The SBS program in

Hall A utilizes dual-arm spectrometers to study the electromagnetic form factors of

protons and neutrons by detecting the elastically scattered electrons and nucleons.

Moreover, the CLAS12 spectrometer in Hall B has a large acceptance that covers almost

2π azimuthally, and it has been used to investigate electron-nuclei elastic as well as

deep-inelastic scattering. In this talk, I will present the formalism of electron-nuclei

scattering and detail the recent SBS experiment to measure the electric form factor

of neutrons. The research and development efforts for the GEM-based radial time

projection chamber used in the CLAS12 BONuS experiment will also be presented. In

addition, I will present a CLAS12 data analysis strategy in the deep inelastic scattering

(DIS) regime to study the internal structure at the partonic level.



Tuesday, October 22, 2024

2:00pm – 4:00pm

ZOOM LINK - Jiwan Poudel<https://jlab-org.zoomgov.com/j/1600320103?pwd=FxgOwlwBk8EeZXmGaMNn3pDJzoJwhK.1&from=addon> / Meeting ID: 160 032 0103 / Passcode: 910408







Stephanie Tysor
Division Administrator
Physics Division
Jefferson Lab
757-269-6005


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