Beam parameters of FLASH beamline BL1 from Hartmann wavefront measurements
We report on online measurements of beam parameters in the soft X-ray and extreme ultraviolet (EUV) spectral range at the free-electron laser FLASH. A compact, self-supporting Hartmann sensor operating in the wavelength range from 6 to 30 nm was used to determine the wavefront quality of individual...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-04, Vol.635 (1), p.S108-S112 |
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| container_title | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment |
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| creator | Flöter, Bernhard Juranić, Pavle Großmann, Peter Kapitzki, Svea Keitel, Barbara Mann, Klaus Plönjes, Elke Schäfer, Bernd Tiedtke, Kai |
| description | We report on online measurements of beam parameters in the soft X-ray and extreme ultraviolet (EUV) spectral range at the free-electron laser FLASH. A compact, self-supporting Hartmann sensor operating in the wavelength range from 6 to 30
nm was used to determine the wavefront quality of individual free-electron laser (FEL) pulses. Beam characterization and alignment of beamline BL1 was performed with
λ
13.5
nm
/90 accuracy for wavefront rms (
w
rms
). A spot size of 159
μm (second moment) and other beam parameters are computed using a spherical reference wavefront generated by a 5
μm pinhole. Beam parameters are also computed relative to a reference wavefront created by a laser-driven plasma source of low coherence, proving the feasibility of such a calibration and reaching
λ
13.5
nm
/7.5
w
rms
accuracy. The sensor was used for alignment of the toroidal focusing mirror of beamline BL1, resulting in a reduction of
w
rms
by 25%, and to investigate wavefront distortions induced by thin solid filters. |
| doi_str_mv | 10.1016/j.nima.2010.10.016 |
| format | Article |
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nm was used to determine the wavefront quality of individual free-electron laser (FEL) pulses. Beam characterization and alignment of beamline BL1 was performed with
λ
13.5
nm
/90 accuracy for wavefront rms (
w
rms
). A spot size of 159
μm (second moment) and other beam parameters are computed using a spherical reference wavefront generated by a 5
μm pinhole. Beam parameters are also computed relative to a reference wavefront created by a laser-driven plasma source of low coherence, proving the feasibility of such a calibration and reaching
λ
13.5
nm
/7.5
w
rms
accuracy. The sensor was used for alignment of the toroidal focusing mirror of beamline BL1, resulting in a reduction of
w
rms
by 25%, and to investigate wavefront distortions induced by thin solid filters.</description><identifier>ISSN: 0168-9002</identifier><identifier>EISSN: 1872-9576</identifier><identifier>DOI: 10.1016/j.nima.2010.10.016</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Accuracy ; Alignment ; Beams (radiation) ; Computation ; EUV ; Focusing ; Free electron lasers ; Free-electron laser ; Hartmann sensor ; Pinholes ; Sensors ; Wave fronts ; Wavefront</subject><ispartof>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2011-04, Vol.635 (1), p.S108-S112</ispartof><rights>2010 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c332t-a69500157e2884d2044b4844347dfc89c6f0ebc97c7d85d7f4d0f87106f3be773</citedby><cites>FETCH-LOGICAL-c332t-a69500157e2884d2044b4844347dfc89c6f0ebc97c7d85d7f4d0f87106f3be773</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S016890021002245X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Flöter, Bernhard</creatorcontrib><creatorcontrib>Juranić, Pavle</creatorcontrib><creatorcontrib>Großmann, Peter</creatorcontrib><creatorcontrib>Kapitzki, Svea</creatorcontrib><creatorcontrib>Keitel, Barbara</creatorcontrib><creatorcontrib>Mann, Klaus</creatorcontrib><creatorcontrib>Plönjes, Elke</creatorcontrib><creatorcontrib>Schäfer, Bernd</creatorcontrib><creatorcontrib>Tiedtke, Kai</creatorcontrib><title>Beam parameters of FLASH beamline BL1 from Hartmann wavefront measurements</title><title>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</title><description>We report on online measurements of beam parameters in the soft X-ray and extreme ultraviolet (EUV) spectral range at the free-electron laser FLASH. A compact, self-supporting Hartmann sensor operating in the wavelength range from 6 to 30
nm was used to determine the wavefront quality of individual free-electron laser (FEL) pulses. Beam characterization and alignment of beamline BL1 was performed with
λ
13.5
nm
/90 accuracy for wavefront rms (
w
rms
). A spot size of 159
μm (second moment) and other beam parameters are computed using a spherical reference wavefront generated by a 5
μm pinhole. Beam parameters are also computed relative to a reference wavefront created by a laser-driven plasma source of low coherence, proving the feasibility of such a calibration and reaching
λ
13.5
nm
/7.5
w
rms
accuracy. The sensor was used for alignment of the toroidal focusing mirror of beamline BL1, resulting in a reduction of
w
rms
by 25%, and to investigate wavefront distortions induced by thin solid filters.</description><subject>Accuracy</subject><subject>Alignment</subject><subject>Beams (radiation)</subject><subject>Computation</subject><subject>EUV</subject><subject>Focusing</subject><subject>Free electron lasers</subject><subject>Free-electron laser</subject><subject>Hartmann sensor</subject><subject>Pinholes</subject><subject>Sensors</subject><subject>Wave fronts</subject><subject>Wavefront</subject><issn>0168-9002</issn><issn>1872-9576</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kLFOwzAQhi0EEqXwAkzemFLs2IkdiaWtKAVFYgBmy3HOUqrYKXZaxNvjUGZuOem7-0-6D6FbShaU0PJ-t_Cd04uc_IJFQmdoRqXIs6oQ5TmaJSKzipD8El3FuCOpKiFn6GUF2uG9DtrBCCHiweJNvXzb4iYN-s4DXtUU2zA4vNVhdNp7_KWPkIgfsQMdDwEc-DFeowur-wg3f32OPjaP7-ttVr8-Pa-XdWYYy8dMl1VBCC0E5FLyNiecN1xyzrhorZGVKS2BxlTCiFYWrbC8JVYKSkrLGhCCzdHd6e4-DJ8HiKNyXTTQ99rDcIhKlpVknLEybeanTROGGANYtQ9JU_hWlKjJm9qpyZuavE0soRR6OIUg_XDsIKhoOvAG2i6AGVU7dP_FfwAhp3VZ</recordid><startdate>20110411</startdate><enddate>20110411</enddate><creator>Flöter, Bernhard</creator><creator>Juranić, Pavle</creator><creator>Großmann, Peter</creator><creator>Kapitzki, Svea</creator><creator>Keitel, Barbara</creator><creator>Mann, Klaus</creator><creator>Plönjes, Elke</creator><creator>Schäfer, Bernd</creator><creator>Tiedtke, Kai</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20110411</creationdate><title>Beam parameters of FLASH beamline BL1 from Hartmann wavefront measurements</title><author>Flöter, Bernhard ; Juranić, Pavle ; Großmann, Peter ; Kapitzki, Svea ; Keitel, Barbara ; Mann, Klaus ; Plönjes, Elke ; Schäfer, Bernd ; Tiedtke, Kai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c332t-a69500157e2884d2044b4844347dfc89c6f0ebc97c7d85d7f4d0f87106f3be773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Accuracy</topic><topic>Alignment</topic><topic>Beams (radiation)</topic><topic>Computation</topic><topic>EUV</topic><topic>Focusing</topic><topic>Free electron lasers</topic><topic>Free-electron laser</topic><topic>Hartmann sensor</topic><topic>Pinholes</topic><topic>Sensors</topic><topic>Wave fronts</topic><topic>Wavefront</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Flöter, Bernhard</creatorcontrib><creatorcontrib>Juranić, Pavle</creatorcontrib><creatorcontrib>Großmann, Peter</creatorcontrib><creatorcontrib>Kapitzki, Svea</creatorcontrib><creatorcontrib>Keitel, Barbara</creatorcontrib><creatorcontrib>Mann, Klaus</creatorcontrib><creatorcontrib>Plönjes, Elke</creatorcontrib><creatorcontrib>Schäfer, Bernd</creatorcontrib><creatorcontrib>Tiedtke, Kai</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Flöter, Bernhard</au><au>Juranić, Pavle</au><au>Großmann, Peter</au><au>Kapitzki, Svea</au><au>Keitel, Barbara</au><au>Mann, Klaus</au><au>Plönjes, Elke</au><au>Schäfer, Bernd</au><au>Tiedtke, Kai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Beam parameters of FLASH beamline BL1 from Hartmann wavefront measurements</atitle><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle><date>2011-04-11</date><risdate>2011</risdate><volume>635</volume><issue>1</issue><spage>S108</spage><epage>S112</epage><pages>S108-S112</pages><issn>0168-9002</issn><eissn>1872-9576</eissn><abstract>We report on online measurements of beam parameters in the soft X-ray and extreme ultraviolet (EUV) spectral range at the free-electron laser FLASH. A compact, self-supporting Hartmann sensor operating in the wavelength range from 6 to 30
nm was used to determine the wavefront quality of individual free-electron laser (FEL) pulses. Beam characterization and alignment of beamline BL1 was performed with
λ
13.5
nm
/90 accuracy for wavefront rms (
w
rms
). A spot size of 159
μm (second moment) and other beam parameters are computed using a spherical reference wavefront generated by a 5
μm pinhole. Beam parameters are also computed relative to a reference wavefront created by a laser-driven plasma source of low coherence, proving the feasibility of such a calibration and reaching
λ
13.5
nm
/7.5
w
rms
accuracy. The sensor was used for alignment of the toroidal focusing mirror of beamline BL1, resulting in a reduction of
w
rms
by 25%, and to investigate wavefront distortions induced by thin solid filters.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.nima.2010.10.016</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0168-9002 |
| ispartof | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2011-04, Vol.635 (1), p.S108-S112 |
| issn | 0168-9002 1872-9576 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_869834336 |
| source | Elsevier ScienceDirect Journals |
| subjects | Accuracy Alignment Beams (radiation) Computation EUV Focusing Free electron lasers Free-electron laser Hartmann sensor Pinholes Sensors Wave fronts Wavefront |
| title | Beam parameters of FLASH beamline BL1 from Hartmann wavefront measurements |
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