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Добірка наукової літератури з теми "Photon beam-position monitor"

Автор: Grafiati
Опубліковано: 11 березня 2023

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Статті в журналах з теми "Photon beam-position monitor"

1

Izumi, T., T. Nakajima, and T. Kurihama. "Photon beam position monitor." Review of Scientific Instruments 60, no. 7 (July 1989): 1951–52. http://dx.doi.org/10.1063/1.1140897.

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2

Ko, J., I. Y. Kim, C. Kim, D. T. Kim, J. Y. Huang, and S. Shin. "Analysis and control of the photon beam position at PLS-II." Journal of Synchrotron Radiation 23, no. 2 (February 18, 2016): 448–54. http://dx.doi.org/10.1107/s1600577516001338.

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At third-generation light sources, the photon beam position stability is a critical issue for user experiments. In general, photon beam position monitors are developed to detect the real photon beam position, and the position is controlled by a feedback system in order to maintain the reference photon beam position. At Pohang Light Source II, a photon beam position stability of less than 1 µm r.m.s. was achieved for a user service period in the beamline, where the photon beam position monitor is installed. Nevertheless, a detailed analysis of the photon beam position data was necessary in order to ensure the performance of the photon beam position monitor, since it can suffer from various unknown types of noise, such as background contamination due to upstream or downstream dipole radiation, and undulator gap dependence. This paper reports the results of a start-to-end study of the photon beam position stability and a singular value decomposition analysis to confirm the reliability of the photon beam position data.
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3

Mitsuhashi, T., A. Ueda, and T. Katsura. "High‐flux photon beam position monitor." Review of Scientific Instruments 63, no. 1 (January 1992): 534–37. http://dx.doi.org/10.1063/1.1142698.

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4

Johnson, E. D., and T. Oversluizen. "Compact high flux photon beam position monitor." Review of Scientific Instruments 60, no. 7 (July 1989): 1947–50. http://dx.doi.org/10.1063/1.1140896.

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5

Samadi, Nazanin, Bassey Bassey, Mercedes Martinson, George Belev, Les Dallin, Mark de Jong, and Dean Chapman. "A phase-space beam position monitor for synchrotron radiation." Journal of Synchrotron Radiation 22, no. 4 (June 25, 2015): 946–55. http://dx.doi.org/10.1107/s1600577515007390.

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The stability of the photon beam position on synchrotron beamlines is critical for most if not all synchrotron radiation experiments. The position of the beam at the experiment or optical element location is set by the position and angle of the electron beam source as it traverses the magnetic field of the bend-magnet or insertion device. Thus an ideal photon beam monitor would be able to simultaneously measure the photon beam's position and angle, and thus infer the electron beam's position in phase space. X-ray diffraction is commonly used to prepare monochromatic beams on X-ray beamlines usually in the form of a double-crystal monochromator. Diffraction couples the photon wavelength or energy to the incident angle on the lattice planes within the crystal. The beam from such a monochromator will contain a spread of energies due to the vertical divergence of the photon beam from the source. This range of energies can easily cover the absorption edge of a filter element such as iodine at 33.17 keV. A vertical profile measurement of the photon beam footprint with and without the filter can be used to determine the vertical centroid position and angle of the photon beam. In the measurements described here an imaging detector is used to measure these vertical profiles with an iodine filter that horizontally covers part of the monochromatic beam. The goal was to investigate the use of a combined monochromator, filter and detector as a phase-space beam position monitor. The system was tested for sensitivity to position and angle under a number of synchrotron operating conditions, such as normal operations and special operating modes where the photon beam is intentionally altered in position and angle at the source point. The results are comparable with other methods of beam position measurement and indicate that such a system is feasible in situations where part of the synchrotron beam can be used for the phase-space measurement.
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6

Kim, Changbum, Jong Chel Yoon, Seung-nam Kim, Myong-jin Kim, Hee Seob Kim, Chun Kil Ryu, Chae-soon Lee, et al. "Photon-beam-position-monitor in PLS Diagnostic Beamline." Journal of the Korean Physical Society 56, no. 6(1) (June 15, 2010): 1981–84. http://dx.doi.org/10.3938/jkps.56.1981.

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7

Cerino, John A., Thomas Rabedeau, and William Bowen. "Photon beam position monitor for SSRL Beamline 9." Review of Scientific Instruments 66, no. 2 (February 1995): 1646–47. http://dx.doi.org/10.1063/1.1145871.

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8

Sorokin, Andrey A., Yilmaz Bican, Susanne Bonfigt, Maciej Brachmanski, Markus Braune, Ulf Fini Jastrow, Alexander Gottwald, Hendrik Kaser, Mathias Richter, and Kai Tiedtke. "An X-ray gas monitor for free-electron lasers." Journal of Synchrotron Radiation 26, no. 4 (June 12, 2019): 1092–100. http://dx.doi.org/10.1107/s1600577519005174.

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Анотація:
A novel X-ray gas monitor (XGM) has been developed which allows the measurement of absolute photon pulse energy and photon beam position at all existing and upcoming free-electron lasers (FELs) over a broad spectral range covering vacuum ultraviolet (VUV), extreme ultraviolet (EUV) and soft and hard X-rays. The XGM covers a wide dynamic range from spontaneous undulator radiation to FEL radiation and provides a temporal resolution of better than 200 ns. The XGM consists of two X-ray gas-monitor detectors (XGMDs) and two huge-aperture open electron multipliers (HAMPs). The HAMP enhances the detection efficiency of the XGM for low-intensity radiation down to 105 photons per pulse and for FEL radiation in the hard X-ray spectral range, while the XGMD operates in higher-intensity regimes. The relative standard uncertainty for measurements of the absolute photon pulse energy is well below 10%, and down to 1% for measurements of relative pulse-to-pulse intensity on pulses with more than 1010 photons per pulse. The accuracy of beam-position monitoring in the vertical and horizontal directions is of the order of 10 µm.
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9

Kim, Changbum, Seunghwan Shin, Ilmoon Hwang, Byung-Joon Lee, Young-Do Joo, Taekyun Ha, Jong Chel Yoon, et al. "Correlation study of a beam-position monitor and a photon-beam-position monitor in the PLS-II." Journal of the Korean Physical Society 66, no. 2 (January 2015): 167–70. http://dx.doi.org/10.3938/jkps.66.167.

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10

Chen, J. R., T. S. Ueng, G. Y. Hsiung, T. F. Lin, C. T. Lee, S. L. Tsai, and S. L. Chang. "A synchrotron radiation beam-position monitor at the Taiwan Light Source." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 621–23. http://dx.doi.org/10.1107/s0909049597018207.

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A prototype photon-beam-position monitor has been designed, fabricated and tested at the Taiwan Light Source of the Synchrotron Radiation Research Center. Aluminium was chosen as the material of the blade electrodes due to its low atomic number and high thermal conductivity. The resolution of this photon-beam-position monitor was <±1 µm. The sensitivity of the blade electrode has been measured in situ. Results of measurements for bending-magnet light and undulator light with different gaps are described.
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Дисертації з теми "Photon beam-position monitor"

1

Antonelli, Matias. "Photon Beam-Position Monitor basati su diamante e quantum well per sorgenti di luce di terza e quarta generazione." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8540.

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2011/2012
L’attività di ricerca qui presentata ha avuto come oggetto lo sviluppo di tecnologie innovative per la produzione di photon beam-position monitor (pBPM) veloci per sincrotroni di terza generazione e laser a elettroni liberi. Tali rivelatori di fotoni sono uno strumento diagnostico utile non solo per le linee che usano la luce di sincrotrone, ma anche per il sistema di controllo dell’acceleratore che la produce. A causa di diverse limitazioni delle tecnologie comunemente usate per la fabbricazione di pBPM, la diagnostica dei fasci di luce non è diffusa né consolidata quanto quella del fascio di particelle, utilizzata per controllare la macchina. Alla luce dei recenti progressi di materiali e strumentazione, si è indirizzata l’attività di ricerca sui rivelatori veloci verso tecnologie allo stato solido quali quelle del diamante monocristallino e dei dispositivi a quantum well, realizzando pBPM innovativi basati su tali tecnologie. In questo documento, dopo un’introduzione al contesto delle sorgenti di luce in cui si è operato, sono riportati e discussi gli aspetti più importanti dello sviluppo di dette tecnologie, corredati dai risultati più significativi delle numerose prove sperimentali cui sono stati sottoposti i rivelatori realizzati.
XXV Ciclo
1983
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2

Wang, C. T., and 王志中. "Design Study For An Undulator Photon Beam Position And Profile Monitor." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/23836619817848062399.

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3

Cai, Shi-Long, and 蔡世隆. "The study of the stability and sentivity of the undulator photon beam position monitor." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/39705944415384103440.

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Частини книг з теми "Photon beam-position monitor"

1

Arutunian, S. G., N. M. Dobrovolski, M. R. Mailian, V. A. Oganessian, and I. E. Vasiniuk. "Vibrating Wires Fence as a Negligibly Destructive Beam Profile and Beam Position Monitor." In Electron-Photon Interaction in Dense Media, 303–8. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0367-4_24.

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Тези доповідей конференцій з теми "Photon beam-position monitor"

1

Lill, Robert M., and Glenn A. Decker. "Advanced photon source monopulse RF beam position monitor front-end upgrade." In The eighth beam instrumentation workshop. AIP, 1998. http://dx.doi.org/10.1063/1.57013.

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2

Chung, Y., and E. Kahana. "Resolution and drift measurements on the advanced photon source beam position monitor." In The 6th workshop on beam instrumentation. AIP, 1995. http://dx.doi.org/10.1063/1.48058.

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3

Galimberti, A. "Operational Experience with the Photon Beam Position Monitor for Undulator Beamlines of Elettra." In SYNCHROTRON RADIATION INSTRUMENTATION: Eighth International Conference on Synchrotron Radiation Instrumentation. AIP, 2004. http://dx.doi.org/10.1063/1.1757864.

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4

Kahana, Emanuel, and Youngjoo Chung. "Test results of a monopulse beam position monitor for the advanced photon source." In Accelerator instrumentation fourth annual workshop. AIP, 1992. http://dx.doi.org/10.1063/1.44347.

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5

Hsueh, H. P., C. C. Chang, S. N. Hsu, I. T. Huang, Y. B. Chen, C. K. Kuan, G. Y. Hsiung, et al. "Design and Manufacturing Criteria for Beam Position Monitor (BPM) of Taiwan Photon Source (TPS)." In SRI 2009, 10TH INTERNATIONAL CONFERENCE ON RADIATION INSTRUMENTATION. AIP, 2010. http://dx.doi.org/10.1063/1.3463263.

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6

Sereno, Nicholas S. "Calibration of an advanced photon source linac beam position monitor used for positron position measurement of a beam containing both positrons and electrons." In The eighth beam instrumentation workshop. AIP, 1998. http://dx.doi.org/10.1063/1.57014.

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7

Decker, Glenn, P. Den Hartog, O. Singh, and Gerd Rosenbaum. "Progress toward a hard x-ray insertion device beam position monitor at the Advanced Photon Source." In 2007 IEEE Particle Accelerator Conference (PAC). IEEE, 2007. http://dx.doi.org/10.1109/pac.2007.4440005.

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8

Huang, Chih-Hsien, Chun-Yi Wu, Pei-Chen Chiu, Yung-Sen Cheng, Chih-Yu Liao, Kuo-Hwa Hu, and Kuo-Tung Hsu. "X-ray beam position monitors and their usage at the Taiwan photon source." In PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION – SRI2018. Author(s), 2019. http://dx.doi.org/10.1063/1.5084684.

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9

Lee, S. H., B. X. Yang, G. Decker, N. Sereno, and M. Ramanathan. "Progress on the development of the next generation x-ray beam position monitors at the advanced photon source." In PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION – SRI2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4952810.

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10

DeSalvo, R., A. A. Said, M. Sheik-Bahae, D. J. Hagan, and E. W. Van Stryland. "Measurement of the dispersion of the nonlinear refractive index in wide-gap dielectrics from the UV to the IR." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.the6.

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Анотація:
The n2 of BaF2, MgF2, LiF, sapphire (Al2O3), and diamond are measured with picosecond pulses from a Q-switched, mode-locked Nd:YAG laser at wavelengths of 1064 nm, 532 nm, 355 nm, and 266 nm with the corresponding pulsewidths of 30 ps (FWHM), 21 ps (FWHM), 17 ps (FWHM), and 15 ps (FWHM), respectively. The experimental data is compared to the recently published two-band model,1 which predicts the nonlinear refractive index as a function of the incident photon energy to the material's energy gap, ħω/E g . The two-photon absorption coefficient is measured in diamond at 355 nm and 266 nm and yields values of β = 0.3 cm/GW and β = 0.7 cm/GW, respectively. The dispersion of n2 is measured by the Z-Scan technique,2 where the transmittance of a focused Gaussian beam with constant energy is monitored through an aperture in the far-field as a function of the sample's position with respect to focus. This technique gives a direct measurement of the sign and magnitude of the nonlinear refractive index. By removal of the far-field aperture, the two-photon absorption (2PA) coefficient of the material can be measured. For photon energies in the range E g /2<ħω < E g , the material will exhibit 2PA.
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