567 citations · 1.1k across the 11 of their papers we have counts for
11 papers
Compact sub-10 ps Resolution Radio Frequency Photomultiplier Tube
Sergey Abrahamyan, Simon Zhamkochyan, Hasmik Rostomyan +16
Experimental measurements of the radial spreading of photoelectrons emitted from a multi-alkali photocathode in a MCP-based photomultiplier tube have shown that, for photon wavelen…
A Helical-Deflector-Based Radio-Frequency Spiral Scanning System for keV Energy Electrons
Simon Zhamkochyan, Vanik Kakoyan, Vardan Bardakhchyan +21
We present the design, modeling, and experimental validation of a radio-frequency based time-to-position conversion system for keV electrons incorporating a helical deflector opera…
Picosecond Precision Heavy-Ion Detector for Λ Hypernuclei Lifetime Studies
Simon Zhamkochyan, Sergey Abrahamyan, Amur Margaryan +18
In this paper, we present the design and preliminary performance evaluation of a new heavy-ion detector for direct measurements of heavy Λ hypernuclei lifetime. The detector employ…
Picosecond resolution photoelectron emission lifetime detection system
V. Kakoyan, S. Zhamkochyan, S. Abrahamyan +21
This paper describes a new photoelectron emission lifetime detection system. It is based on a recently developed Radio Frequency Timing technique of keV electrons and a 40 MHz, ult…
Advanced Radio Frequency Timing AppaRATus (ARARAT) Technique and Applications
Ani Aprahamian, Amur Margaryan, Vanik Kakoyan +28
The development of the advanced Radio Frequency Timer of electrons is described. It is based on a helical deflector, which performs circular or elliptical sweeps of keV electrons,…
An RF Timer of Electrons and Photons with the Potential to reach Picosecond Precision
Amur Margaryan, Vanik Kakoyan, Simon Zhamkochyan +17
This paper describes a new radio frequency timer of keV energy electrons. It is based on a helical deflector, which performs circular or elliptical sweeps of keV electrons, by mean…
Measurement of the generalized spin polarizabilities of the neutron in the low region
V. Sulkosky, C. Peng, J. -P. Chen +106
Understanding the nucleon spin structure in the regime where the strong interaction becomes truly strong poses a challenge to both experiment and theory. At energy scales below the…
Measurement of the 3He Spin-Structure Functions and of Neutron (3He) Spin-Dependent Sum Rules at 0.035<Q^2<0.24 GeV^2
V. Sulkosky, J. T. Singh, C. Peng +106
The spin-structure functions and , and the spin-dependent partial cross-section have been extracted from the polarized cross-sections differences, $Δσ_{\…
Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering
S. Abrahamyan, Z. Ahmed, H. Albataineh +132
We report the first measurement of the parity-violating asymmetry A_PV in the elastic scattering of polarized electrons from 208Pb. A_PV is sensitive to the radius of the neutron d…
Search for a new gauge boson in the Experiment (APEX)
S. Abrahamyan, Z. Ahmed, K. Allada +63
We present a search at Jefferson Laboratory for new forces mediated by sub-GeV vector bosons with weak coupling to electrons. Such a particle can be produced in electron-…
Measurements of the Electric Form Factor of the Neutron up to Q2=3.4 GeV2 using the Reaction He3(e,e'n)pp
S. Riordan, S. Abrahamyan, B. Craver +115
The electric form factor of the neutron was determined from studies of the reaction He3(e,e'n)pp in quasi-elastic kinematics in Hall A at Jefferson Lab. Longitudinally polarized el…