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Title: Performance of Frontend Pulse-by-Pulse SR Beam Monitor with Microstripline Structure

Abstract

We have developed a frontend pulse-by-pulse synchrotron radiation (SR) beam monitor with microstripline structure, which is operated in photoemission mode. This monitor is composed of a detector head with a microstripline having the band-width of several GHz, an electrode for applying high voltage and a mask. This monitor can be used for monitoring not only the pulse-by-pulse photon beam position, but also the SR pulse intensity and the pulse timing. Beam tests of this monitor have been carried out and feasibilities have been demonstrated.

Authors:
; ;  [1];  [1];  [2]
  1. SPring-8/JASRI, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
21049191
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436235; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM MONITORING; BEAM MONITORS; BEAM OPTICS; ELECTRIC POTENTIAL; ELECTRODES; GHZ RANGE; PERFORMANCE; PHOTOEMISSION; PHOTON BEAMS; PULSES; SYNCHROTRON RADIATION; X RADIATION

Citation Formats

Aoyagi, Hideki, Sano, Mutsumi, Takahashi, Sunao, Kitamura, Hideo, and SPring-8/RIKEN, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148. Performance of Frontend Pulse-by-Pulse SR Beam Monitor with Microstripline Structure. United States: N. p., 2007. Web. doi:10.1063/1.2436235.
Aoyagi, Hideki, Sano, Mutsumi, Takahashi, Sunao, Kitamura, Hideo, & SPring-8/RIKEN, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148. Performance of Frontend Pulse-by-Pulse SR Beam Monitor with Microstripline Structure. United States. doi:10.1063/1.2436235.
Aoyagi, Hideki, Sano, Mutsumi, Takahashi, Sunao, Kitamura, Hideo, and SPring-8/RIKEN, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148. Fri . "Performance of Frontend Pulse-by-Pulse SR Beam Monitor with Microstripline Structure". United States. doi:10.1063/1.2436235.
@article{osti_21049191,
title = {Performance of Frontend Pulse-by-Pulse SR Beam Monitor with Microstripline Structure},
author = {Aoyagi, Hideki and Sano, Mutsumi and Takahashi, Sunao and Kitamura, Hideo and SPring-8/RIKEN, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148},
abstractNote = {We have developed a frontend pulse-by-pulse synchrotron radiation (SR) beam monitor with microstripline structure, which is operated in photoemission mode. This monitor is composed of a detector head with a microstripline having the band-width of several GHz, an electrode for applying high voltage and a mask. This monitor can be used for monitoring not only the pulse-by-pulse photon beam position, but also the SR pulse intensity and the pulse timing. Beam tests of this monitor have been carried out and feasibilities have been demonstrated.},
doi = {10.1063/1.2436235},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}
  • Radio frequency (RF) properties of coaxial feed-through connectors that are designed for a frontend pulse-by-pulse synchrotron radiation (SR) beam monitor are described in this paper. We have designed and fabricated a small detector head operated in photoemission mode. This detector is directory connected to a SMA feed-through connector to have fast response time. Using this detector we successfully observed an isolated pulse of monochromatic beam. In order to improve RF properties of this detector, we have carried out simulation study and measurements of newly designed prototypes.
  • A tritium gas monitor was developed by applying several techniques including pulse shape analysis. The optimum analyzer values were determined for parameters such as the bias (voltage) applied to the detector, counting gas flow rate, and mixing ratio of sample air to counting gas using an enclosed tritium reference source. After applying these optimized parameters, the factor for converting counting rate to tritium concentration was determined by conducting an experiment using tritiated methane gas. Finally, the detection limit of the monitor for air samples containing tritium was determined based on the conversion factor. (authors)
  • A Pearson 1010 current monitor toroid has been in use for many years to measure the charge per bunch being delivered from the LANSCE Proton Storage Ring (PSR) to the Lujan Center's spallation neutron source. Improved electronics have been developed to process the toroid's signal. The new system generates a calibrated measurement of charge per pulse and is network-enabled to provide remote access to charge, current and other data via EPICS. It is experimentally demonstrated that accurate charge measurements can be made on calibration pulses that contain frequency components well above what is contained in a typical beam pulse. Themore » new electronics consists of a National Instruments (NI) PXI-1002 chassis that contains a PXI-8176 controller, a PXI-5112 100-MS/s digitizer, and a PXI-6602 scalar and digital I/O module. The 8176 runs under the NI Real Time operating system and was programmed to integrate proton pulse waveforms acquired by the 5112 digitizer. For each beam pulse a 50-kHz pulse stream proportional to the pulse charge is generated by the 6602 and this real time information is distributed to all experimental areas.« less
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