Laser power meters as an X-ray power diagnostic for LCLS-II

Heimann, Philip; Moeller, Stefan; Carbajo, Sergio; Song, Sanghoon; Dakovski, Georgi; Nordlund, Dennis; Fritz, David

doi:10.1107/S1600577517014096

Title: Laser power meters as an X-ray power diagnostic for LCLS-II

Abstract

For the LCLS-II X-ray instruments, laser power meters are being developed as compact X-ray power diagnostics to operate at soft and tender X-ray photon energies. These diagnostics can be installed at various locations along an X-ray free-electron laser (FEL) beamline in order to monitor the transmission of X-ray optics along the beam path. In addition, the power meters will be used to determine the absolute X-ray power at the endstations. Here, thermopile power meters, which measure average power, and have been chosen primarily for their compatibility with the high repetition rates at LCLS-II, are evaluated. Here, a number of characteristics in the soft X-ray range are presented including linearity, calibrations conducted with a photodiode and a gas monitor detector as well as ultra-high-vacuum compatibility tests using residual gas analysis. The application of these power meters for LCLS-II and other X-ray FEL sources is discussed.

Authors:

Heimann, Philip ^[1]; Moeller, Stefan ^[1]; Carbajo, Sergio ^[1];

^[1]; Dakovski, Georgi ^[1]; Nordlund, Dennis ^[1]; Fritz, David ^[1]

SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:: Mon Jan 01 00:00:00 EST 2018

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1417640

Grant/Contract Number:: AC02-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Synchrotron Radiation (Online)

Additional Journal Information:: Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1600-5775

Publisher:: International Union of Crystallography

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; power meter; diagnostics; X-ray free electron laser

Citation Formats


                    Heimann, Philip, Moeller, Stefan, Carbajo, Sergio, Song, Sanghoon, Dakovski, Georgi, Nordlund, Dennis, and Fritz, David. Laser power meters as an X-ray power diagnostic for LCLS-II.  United States: N. p., 2018. 
Web.  doi:10.1107/S1600577517014096.

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                    Heimann, Philip, Moeller, Stefan, Carbajo, Sergio, Song, Sanghoon, Dakovski, Georgi, Nordlund, Dennis, & Fritz, David. Laser power meters as an X-ray power diagnostic for LCLS-II.  United States.  https://doi.org/10.1107/S1600577517014096

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                    Heimann, Philip, Moeller, Stefan, Carbajo, Sergio, Song, Sanghoon, Dakovski, Georgi, Nordlund, Dennis, and Fritz, David. Mon .  
"Laser power meters as an X-ray power diagnostic for LCLS-II".  United States.  https://doi.org/10.1107/S1600577517014096.  https://www.osti.gov/servlets/purl/1417640.

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@article{osti_1417640,

  title        = {Laser power meters as an X-ray power diagnostic for LCLS-II},

  author       = {Heimann, Philip and Moeller, Stefan and Carbajo, Sergio and Song, Sanghoon and Dakovski, Georgi and Nordlund, Dennis and Fritz, David},

  abstractNote = {For the LCLS-II X-ray instruments, laser power meters are being developed as compact X-ray power diagnostics to operate at soft and tender X-ray photon energies. These diagnostics can be installed at various locations along an X-ray free-electron laser (FEL) beamline in order to monitor the transmission of X-ray optics along the beam path. In addition, the power meters will be used to determine the absolute X-ray power at the endstations. Here, thermopile power meters, which measure average power, and have been chosen primarily for their compatibility with the high repetition rates at LCLS-II, are evaluated. Here, a number of characteristics in the soft X-ray range are presented including linearity, calibrations conducted with a photodiode and a gas monitor detector as well as ultra-high-vacuum compatibility tests using residual gas analysis. The application of these power meters for LCLS-II and other X-ray FEL sources is discussed.},

  doi          = {10.1107/S1600577517014096},

  journal      = {Journal of Synchrotron Radiation (Online)},

  number       = 1,

  volume       = 25,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 2018},

  month        = {Mon Jan 01 00:00:00 EST 2018}

}

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Works referencing / citing this record:

Pulse power measurements and attenuator characterization of the hard X-ray beamline at the Linac Coherent Light Source
conference, May 2019

Song, Sanghoon; Alonso-Mori, Roberto; Chollet, Matthieu
X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation V
DOI: 10.1117/12.2520827

Pulse power measurements and attenuator characterization of the hard X-ray beamline at the Linac Coherent Light Source
text, January 2019

Song, Sanghoon; Alonso-Mori, Roberto; Chollet, Matthieu
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2019-05100

Enzyme intermediates captured “on the fly” by mix-and-inject serial crystallography
journal, May 2018

Olmos, Jose L.; Pandey, Suraj; Martin-Garcia, Jose M.
BMC Biology, Vol. 16, Issue 1
DOI: 10.1186/s12915-018-0524-5

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Title: Laser power meters as an X-ray power diagnostic for LCLS-II

Abstract

Citation Formats

Pulse power measurements and attenuator characterization of the hard X-ray beamline at the Linac Coherent Light Source conference, May 2019

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