Study of Few-Nucleon Systems with the CEBAF Large Acceptance Spectrometer

2011 ◽  
Author(s):  
Yordanka Ilieva ◽  
Keyword(s):  
Large Acceptance

Simultaneous Multiple Surface concentrators for large acceptance angles and gap losses control

Optik ◽  
2021 ◽  
pp. 167116
Author(s):  
Diogo Canavarro ◽  
Julio Chaves ◽  
Henry Borges ◽  
André Santos ◽  
Manuel Collares-Pereira
Keyword(s):  
Large Acceptance

The MIT-Bates large acceptance spectrometer toroid

2003 ◽  
Vol 721 ◽  
pp. C1075-C1078
Author(s):  
R. Alarcon
Keyword(s):  
Large Acceptance

scholarly journals Large acceptance of non-collinear phase-matching second harmonic generation on the surface of an anomalous-like bulk dispersion medium

2014 ◽  
Vol 22 (23) ◽  
pp. 28234 ◽  
Author(s):  
Xiaojing Wang ◽  
Huaijin Ren ◽  
Ning An ◽  
Xiaohui Zhao ◽  
Yuanlin Zheng ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Dispersion Medium ◽  
Second Harmonic ◽  
Phase Matching ◽  
Large Acceptance

A large acceptance cylindrical drift chamber detector

1995 ◽  
Vol 364 (2) ◽  
pp. 265-278
Author(s):  
D.A. Ambrose ◽  
M.G. Bachman ◽  
W.P. Coffey ◽  
G. Glass ◽  
K.H. McNaughton ◽  
...  
Keyword(s):  
Drift Chamber ◽  
Large Acceptance

scholarly journals Studying neutron structure at Jefferson Lab through electron scattering off the deuteron, using CLAS12 and the Central Neutron Detector

2020 ◽  
Vol 1643 (1) ◽  
pp. 012191
Author(s):  
Paul Naidoo ◽  
Daria Sokhan ◽  
Pierre Chatagnon ◽  
Silvia Niccolai ◽  
Katheryne Price
Keyword(s):  
Neutron Detector ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
High Energy ◽  
Neutral Meson ◽  
Deuteron Target ◽  
Jefferson Lab ◽  
3D Tomography ◽  
Large Acceptance

Abstract Generalised Parton Distributions (GPDs) offer a way of imaging nucleons through 3D tomography. They can be accessed experimentally in processes such as Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP), where a high energy electron scatters from a quark inside a nucleon and a high energy photon or meson is produced as a result. Jefferson Lab has recently completed its energy upgrade and Hall B houses the new, large-acceptance CLAS12 detector array optimised for measurements of DVCS and DVMP in the newly accessible kinematic regime. Measurements on the proton and neutron are complementary and both are necessary to facilitate access to the full set of GPDs and enable their flavour separation. Neutron DVCS and DVMP are possible with the use of a deuteron target – the first CLAS12 experiment with which has started taking data this year. To enable exclusive reconstruction of DVCS and neutral-meson DVMP, a dedicated detector for recoiling neutrons – the Central Neutron Detector (CND) – was integrated into CLAS12. We present the first CLAS12 deuteron-target experiment, with a focus on the performance of the CND.

scholarly journals Extraction of ALUsin(ϕ) moments from the hard exclusive π+ channel in a wide range of kinematics with CLAS

2020 ◽  
Vol 1643 (1) ◽  
pp. 012187
Author(s):  
Stefan Diehl ◽  
Kyungseon Joo
Keyword(s):  
Spin Asymmetry ◽  
Smooth Transition ◽  
Parton Distributions ◽  
Generalized Parton Distributions ◽  
Transition Distribution ◽  
Clear Sign ◽  
Sign Change ◽  
Wide Range ◽  
Large Acceptance ◽  
Beam Spin Asymmetry

Abstract The beam-spin asymmetry (BSA) has been measured for the hard exclusive e p → e n π+ reaction over a wide range of kinematics in the deep inelastic regime. The measurements were performed with the CEBAF Large Acceptance Spectrometer (CLAS) using a 5.5 GeV polarized electron beam at Jefferson Lab (JLAB). The ϕ dependence of the BSA as well as the −t, Q 2 and xB dependence of the extracted ALU sin(ϕ) moment will be presented. For ALU sin(ϕ) a clear sign change can be observed between pions emitted in forward and backward direction with a smooth transition around 90° in CM. The results will be discussed in the context of formalisms depending on generalized parton distributions (GPDs) and transition distribution amplitudes (TDAs), which can be used to describe complementary kinematic regimes.

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