منابع مشابه
Microquasars as sources of positron annihilation radiation
We consider the production of positrons in microquasars, i.e. X-ray binary systems that exhibit jets frequently, but not continuously. We estimate the production rate of positrons in microquasars, both by simple energy considerations and in the framework of various proposed models. We then evaluate the collective emissivity of the annihilation radiation produced by Galactic microquasars and we ...
متن کاملDevelopment of intense, long-lived positron sources
In recent years slow positron beam physics has become a very active and diverse field [1] . Currently under consideration are several applications of slow positron beams which require intense beams (>_ 1 Ci of e + ) for their success. A partial list of such applications includes : the production and study of antihydrogen [2], the use of positrons in synchrotron light sources [3], positron micro...
متن کاملNovel Designs for Undulator Based Positron Sources
At least three proposed future colliders (ILC, CLiC and LHeC) require a positron source with a yield greater than 10 e+s−1. An undulator-based positron source has the potential to provide the required yield. This design generates gamma rays by using a high energy electron beam traveling through a superconducting helical undulator. The gamma rays then pair produce in a titanium alloy target to p...
متن کاملErl Parameters for Compton Polarized Positron Sources
One of the main challenges for also future linear colliders projects (ILC and CLIC) is to provide an efficient positron source that takes into account the constraint imposed by the target heating in the pair production. At present, different schemes have been proposed to produce high energy gammas to be converted in e-e pairs into an amorphous target [1,2,3]. One of them considers the possibili...
متن کاملStacking Simulations for Compton Positron Sources of Future Linear Colliders
The Compton positron source of a future linear collider must obtain the target bunch population by accumulating a large number of positron packets, arriving either in a number of bursts from a ‘Compton ring’, with intermediate damping of the scattering electron beam, or quasicontinually from a ‘Compton energy recovery linac’. We present simulation results for the longitudinal stacking of Compto...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1994
ISSN: 0168-9002
DOI: 10.1016/0168-9002(94)91592-x