3. Measurement Practical Procedure or Technique of Photon Beam and Electron Beam

2021 ◽  
Vol 77 (1) ◽  
pp. 65-74
Author(s):  
Tsukasa Wakayama ◽  
Yoshihiro Ueda
Keyword(s):  
Electron Beam ◽  
Photon Beam ◽  
Practical Procedure

The electron beam orbit sensitivity of the photon flux of the photon beam line

2002 ◽  
Author(s):  
I. Hsu ◽  
G.H. Luo ◽  
K.L. Tsang ◽  
C.C. Chu ◽  
C.I. Yu ◽  
...  
Keyword(s):  
Electron Beam ◽  
Beam Line ◽  
Photon Beam ◽  
Photon Flux ◽  
Beam Orbit

X-Rays at the SIAM Photon Source

2005 ◽  
Vol 107 ◽  
pp. 1-6 ◽  
Author(s):  
R. Apiwatwaja ◽  
S. Chunjarean ◽  
K. Hass ◽  
G. Hoyes ◽  
C. Kaewprasert ◽  
...  
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Photon Beam ◽  
Electron Beam Energy ◽  
X Rays ◽  
Vacuum Chambers ◽  
Wavelength Shifter ◽  
Insertion Device ◽  
Beam Instabilities ◽  
Photon Source

In this note, we describe the upgrade effort to convert the SIAM Photon source into an Xray synchrotron radiation facility with photon energies up to some 15 keV. This conversion of SIAM Photon into a third generation light source can be achieved through an increase of the electron beam energy and the addition of recently available superconducting wavelength shifter and multipole wiggler magnets. A gradual retrofit of vacuum chambers aiming at a reduction of electron beam instabilities as well as a modification of the focusing structure are expected to greatly increase the brightness of the photon beam. These upgrades will be implemented gradually over a few years to minimize the interruption of ongoing experimental activities. As an ultimate upgrade, a study has been started which shows the feasibility to implement a 2 GeV storage ring replacing the present ring in the same foot print. This new ring is configured to provide double the number of insertion device photon beam lines.

scholarly journals Improving Clinical dosimetric Accuracy of cancer treatment using a special quality of Electron and Photon Beam

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Ayesha Ikhlaq ◽  
Saeed Ahmad Buzdar ◽  
Muhammad Usman Mustafa ◽  
Sana Salahuddin ◽  
Mehr-Un-Nisa ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Electron Beam ◽  
Electron Beams ◽  
Photon Beam ◽  
Field Size ◽  
External Beam Radiation ◽  
Photon Beams ◽  
Depth Dose ◽  
Electron And Photon

In external beam radiation therapy, electron and photon beams have extraordinary characteristics in the treatment of cancer. The electron and photon beam characteristic are essential to study before calibration of machine. This study focused on the dosimetric characteristics of different energies of electron beams for different field size. The basic objective of this work is, to calculate dosimetric parameters and characteristics of electron beam, specially depth dose characteristics along central axis. In this work, 6 MeV, 9 MeV, 12 MeV, 15 MeV and 18 MeV of electron beam and 6 MV and 15 MV of photon beam with different field size is used. Characteristics of depth dose of electron and photon beam in water have analyzed to provide better quality of radiation therapy treatment planning. The different beam characteristics are due to different interactions that occurs between electron beams giving them a definite range whereas photon beams are attenuated leading to dose deposition and much larger range with no definite end. Depth dose characteristics of electron and photon beams do not show same characteristics as interaction of beam with matter depends on the quality of beam. Attenuation and penetration factors change with changing dosimetric parameters. Complete analysis of dosimetric characteristics of electron and photon beam help to choose more accurate beam for the treatment of cancer. This work will help to increase accuracy in treatment of cancer with radiotherapy.

2180 Electron beam vs. photon beam coverage of the spinal axis in pediatric patients with primary CNS malignancies

1996 ◽  
Vol 36 (1) ◽  
pp. 365 ◽  
Author(s):  
Kristie J. Paris ◽  
Tim Guan ◽  
Theresa Pagliuca ◽  
Peter R. Almond ◽  
B. Oliapuram Jose ◽  
...  
Keyword(s):  
Electron Beam ◽  
Pediatric Patients ◽  
Photon Beam ◽  
Spinal Axis ◽  
Cns Malignancies

Benchmarking of Monte Carlo model of Siemens Oncor® linear accelerator for 18MV photon beam: Determination of initial electron beam parameters

2020 ◽  
Vol 27 (6) ◽  
pp. 1047-1070
Author(s):  
Milad Najafzadeh ◽  
Mojtaba Hoseini-Ghafarokhi ◽  
Rezgar Shahi Mayn Bolagh ◽  
Mohammad Haghparast ◽  
Shiva Zarifi ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Electron Beam ◽  
Linear Accelerator ◽  
Monte Carlo Model ◽  
Photon Beam ◽  
Initial Electron ◽  
Beam Parameters

Photon-beam subsource sensitivity to the initial electron-beam parameters

2005 ◽  
Vol 32 (4) ◽  
pp. 1164-1175 ◽  
Author(s):  
Michael K. Fix ◽  
Paul J. Keall ◽  
Jeffrey V. Siebers
Keyword(s):  
Electron Beam ◽  
Photon Beam ◽  
Initial Electron ◽  
Beam Parameters

Decoupling initial electron beam parameters for Monte Carlo photon beam modelling by removing beam-modifying filters from the beam path

2005 ◽  
Vol 50 (24) ◽  
pp. 5935-5951 ◽  
Author(s):  
B De Smedt ◽  
N Reynaert ◽  
F Flachet ◽  
M Coghe ◽  
M G Thompson ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Electron Beam ◽  
Photon Beam ◽  
Beam Path ◽  
Initial Electron ◽  
Beam Parameters

scholarly journals Photoproduction of the Λ(1520) hyperon with a 9 GeV photon beam at GlueX

2020 ◽  
Vol 1643 (1) ◽  
pp. 012175
Author(s):  
Peter Pauli
Keyword(s):  
Electron Beam ◽  
Partial Wave Analysis ◽  
Photon Beam ◽  
Spin Density Matrix ◽  
Final State ◽  
Accelerator Facility ◽  
Beam Asymmetry ◽  
Exotic Mesons ◽  
Newport News ◽  
Wide Range

Abstract The GlueX experiment is located at the Thomas Jefferson National Accelerator Facility (JLab) in Newport News, VA, USA. It features a hermetic 4π detector with excellent tracking and calorimetry capabilities. Its 9 GeV linearly polarized photon beam is produced from the 12 GeV electron beam, delivered by JLab’s Continuous Electron Beam Accelerator Facility (CEBAF), via bremsstrahlung on a thin diamond and is incident on a LH2 target. GlueX recently finished its first data taking period and published first results. The main goal of GlueX is to measure gluonic excitations of mesons. These so-called hybrid or exotic mesons are predicted by Quantum Chromodynamics (QCD) but haven’t been experimentally confirmed yet. They can have quantum numbers not accessible by ordinary quark-antiquark pairs which helps in identifying them using partial wave analysis techniques. The search for exotic mesons requires a very good understanding of photoproduction processes in a wide range of final states, one of them being pK + K − which contains many meson and baryon reactions. The Λ(1520) is a prominent hyperon resonance in this final state and is the subject of this presentation. This talk will give an introduction to the GlueX experiment and show preliminary results for the photoproduction of the Λ(1520) hyperon. The measurement of important observables like the photon beam asymmetry and spin-density matrix elements will be discussed and an outlook to possible measurements of further hyperon states in the pK + K − final state will be given.

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