[Sbs] [EXTERNAL] FW: Dissertation Defense: Wednesday September 18th at 1:00 ET, Provakar Datta

[Puckett, Andrew]

Hello all,

For SBS Collaborators, you’re invited to Provakar’s thesis defense coming up on Wednesday, the 18th.

Best regards,
Andrew

From: Department of Physics mailing list <DEPARTMENT-PHYS-L at LISTSERV.UCONN.EDU> on behalf of "Kolano, Adam" <adam.kolano at UCONN.EDU>
Reply-To: "Kolano, Adam" <adam.kolano at uconn.edu>
Date: Wednesday, September 11, 2024 at 9:17 AM
To: "DEPARTMENT-PHYS-L at LISTSERV.UCONN.EDU" <DEPARTMENT-PHYS-L at LISTSERV.UCONN.EDU>
Subject: Dissertation Defense: Wednesday September 18th at 1:00 ET, Provakar Datta


Dissertation Defense

Provakar Datta

Physics Department, University of Connecticut

Advisor: Dr. Andrew Puckett



Date: Wednesday, September 18th

Time: 1:00 pm

Location: Gant South, Room GS117
Remote Link: https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1610176693-3Fpwd-3DsImMj2uONyhiLJHUtkusl06WrmD3gQ.1&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=IebRyMSEbnsVTrj8mJhCLQ&m=MAr2WY_ecs5vlGrklfUd-_2VMU13m0fgRfDBrlKsL_GyjKSms4PjM02u1suaskzy&s=93YHXiVn45beEdB6XGbHzNoV4rjBkX_-9AO4AVKggCQ&e= 

Passcode: 263227


“Precision Measurements of the Neutron Magnetic Form Factor to High Momentum Transfer using Durand's Method”



Protons and neutrons, collectively known as nucleons, along with electrons, constitute the fundamental building blocks of the visible universe. Understanding their internal structure is crucial for addressing key scientific questions about our origin and existence. Elastic electron-nucleon scattering provides insights into the spatial distributions of charge and current within nucleons through their electromagnetic form factors. Accurate knowledge of these form factors over a broad range of Q2, the squared four-momentum transfer in the scattering process, reveals details about the nucleon's internal structure. However, high-Q2 data of the nucleon electromagnetic form factor is scarce due to the challenges associated with such measurements.

This thesis reports preliminary results from high-precision measurements of the neutron magnetic form factor (GMn) to unprecedented Q2 using Durand's method, also known as the “ratio” method. Systematic errors are greatly reduced by extracting (GMn) from the ratio of neutron-coincident (D(e,e’n)) to proton-coincident (D(e,e’p)) quasi-elastic electron scattering from deuteron. The scattered electrons were detected in the BigBite spectrometer, which features multiple Gas Electron Multiplier (GEM) layers with large active area for high-precision tracking at very high rates. Simultaneous nucleon detection was performed by the Super BigBite spectrometer, which utilizes a dipole magnet with large solid angle acceptance at forward angles and a novel hadron calorimeter with very high and comparable detection efficiencies for both protons and neutrons. This setup could handle very high luminosity, making high-Q2 measurements feasible. Data were collected at five Q2 points: 3, 4.5, 7.4, 9.9, and 13.6 (GeV/c)2. Preliminary results are reported for all, with the lowest two Q2 points in good agreement with existing world data, while the higher points significantly extend the Q2 range in which GMn is known accurately. The precision of the highest Q2 point is expected to remain unmatched for years to come.

We will also attempt to stream the talk via webex here: https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1610176693-3Fpwd-3DsImMj2uONyhiLJHUtkusl06WrmD3gQ.1&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=IebRyMSEbnsVTrj8mJhCLQ&m=MAr2WY_ecs5vlGrklfUd-_2VMU13m0fgRfDBrlKsL_GyjKSms4PjM02u1suaskzy&s=93YHXiVn45beEdB6XGbHzNoV4rjBkX_-9AO4AVKggCQ&e=  for those who wish to join remotely
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