Publications [#356028] of Haiyan Gao

Papers Published

1. Pierce, J; Brock, J; Carlin, C; Keith, C; Maxwell, J; Meekins, D; Bai, X; Deur, A; Dutta, D; Gao, H; Gasparian, A; Gnanvo, K; Gu, C; Higinbotham, D; Khandaker, M; Liyanage, N; Meziane, M; Pasyuk, E; Peng, C; Punjabi, V; Xiong, W; Yan, X; Ye, L; Zhang, Y, The PRad windowless gas flow target, Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, vol. 1003 (July, 2021) [doi] [reputed journal]
   (last updated on 2026/01/16)

   Author's Comments:
   This is a paper based on the new target we developed at the early stage of the project for the PRad experiment. Later my group played the important role of simulating the target performance, and the data analysis. I played a leading role in the writing of the paper.

   Abstract:
   We report on a windowless, high-density, gas-flow target at Jefferson Lab that was used to measure rp, the root-mean-square charge radius of the proton. The target achieved its design goal of an areal density of 2 × 10¹⁸ atoms/cm², with the gas uniformly distributed over the 4 cm length of the cell and less than 1% residual gas outside the cell. This design eliminated scattering from the end caps of the target cell, a problem endemic to previous measurements of the proton charge radius in electron scattering experiments, and permitted a precise, model-independent extraction of rp by reaching unprecedentedly low values of Q², the square of the electron's transfer of four-momentum to the proton.