نتایج جستجو برای: beamline
تعداد نتایج: 2367 فیلتر نتایج به سال:
The different tomography imaging modalities of the ESRF Medical Beamline are described and research applications are presented
The GlueX experiment at Jefferson Lab has been designed to study photoproduction reactions with a 9-GeV linearly polarized photon beam. energy and arrival time of beam photons are tagged using scintillator hodoscope scintillating fiber array. flux is determined pair spectrometer, while the linear polarization polarimeter based on triplet photoproduction. Charged-particle tracks from interaction...
Modern synchrotron beamlines often take the form of critical illumination systems, where an incohrent source of limited spatial extent is re-imaged to an experimental plane of interest. Unique constraints of synchrotron sources and beamline, however, may preclude the use of the simple Zernike approximation for calculating the object-image coherence relationship. Here, we perform a rigorous anal...
The interaction of ion beams with the surrounding residual gas leads to photon emission by the excited residual gas atoms and molecules. These photons in the visible spectrum range can be used to monitor the transverse beam profile. We therefore use a multichannel photomultiplier (PMT) together with an optical imaging system. Measurements at COSY synchrotron of the Forschungszentrum Jülich are ...
There is a growing demand for the examination of protein microcrystals at third-generation synchrotron sources. After successful pilot experiments at EMBL/ESRF, which proved that protein microcrystals are often suitable for data collection, operation of the microfocus beamline ID13 was made more user-friendly and suitable for macromolecular crystallography experiments. Given the excellent quali...
Transverse beam profiles in the Relativistic Heavy-Ion Collider (RHIC) will be measured with ionization profile monitors (IPM’s). Each IPM collects and measures the distribution of electrons in the beamline resulting from residual gas ionization during bunch passage. The electrons are swept transversely from the beamline and collected on strip anodes oriented parallel to the beam axis. At each ...
The use of modeling programs for accelerator beamline control and commissioning is becoming an accepted practice. For control applications, the goal in using these programs is to correct deviations in the beam measurements or to change the machine parameters. Since these programs are used for operation of the machine, they are a part of the on-line control system. For commissioning, the goal is...
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