THz-pump and X-ray-probe sources based on an electron linac
DC Field | Value | Language |
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dc.contributor.author | Setiniyaz, Sadiq | - |
dc.contributor.author | Park, Seong Hee | - |
dc.contributor.author | Kim, Hyun Woo | - |
dc.contributor.author | Vinokurov, Nikolay A. | - |
dc.contributor.author | Jang, Kyu-Ha | - |
dc.contributor.author | Lee, Kitae | - |
dc.contributor.author | Baek, In Hyung | - |
dc.contributor.author | Jeong, Young Uk | - |
dc.date.accessioned | 2021-09-02T23:49:29Z | - |
dc.date.available | 2021-09-02T23:49:29Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2017-11 | - |
dc.identifier.issn | 0034-6748 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/81758 | - |
dc.description.abstract | We describe a compact THz-pump and X-ray-probe beamline, based on an electron linac, for ultrafast time-resolved diffraction applications. Two high-energy electron (gamma > 50) bunches, 5 ns apart, impinge upon a single-foil or multifoil radiator and generate THz radiation and X-rays simultaneously. The THz pulse from the first bunch is synchronized to the X-ray beam of the second bunch by using an adjustable optical delay of a THz pulse. The peak power of THz radiation from the multifoil radiator is estimated to be 0.14 GW for a 200 pC well-optimized electron bunch. GEANT4 simulations show that a carbon foil with a thickness of 0.5-1.0 mm has the highest yield of 10-20 keV hard X-rays for a 25 MeV beam, which is approximately 10(3) photons/(keV pC-electrons) within a few degrees of the polar angle. A carbon multifoil radiator with 35 foils (25 mu m thick each) can generate close to 10(3) hard X-rays/(keV pC-electrons) within a 2 degrees acceptance angle. With 200 pC charge and a 100 Hz repetition rate, we can generate 10(7) X-rays per 1 keV energy bin per second or 10(5) X-rays per 1 keV energy bin per pulse. The longitudinal time profile of an X-ray pulse ranges from 400 to 600 fs depending on the acceptance angle. The broadening of the time duration of an X-ray pulse is observed owing to its diverging effect. A double-crystal monochromator will be used to select and transport the desired X-rays to the sample. The heating of the radiators by an electron beam is negligible because of the low beam current. Published by AIP Publishing. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER INST PHYSICS | - |
dc.subject | TRANSITION RADIATION | - |
dc.subject | CRYSTAL | - |
dc.subject | COEFFICIENTS | - |
dc.subject | ATTENUATION | - |
dc.subject | BEAMLINE | - |
dc.subject | DESIGN | - |
dc.title | THz-pump and X-ray-probe sources based on an electron linac | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Seong Hee | - |
dc.identifier.doi | 10.1063/1.5006550 | - |
dc.identifier.scopusid | 2-s2.0-85034609540 | - |
dc.identifier.wosid | 000416780600022 | - |
dc.identifier.bibliographicCitation | REVIEW OF SCIENTIFIC INSTRUMENTS, v.88, no.11 | - |
dc.relation.isPartOf | REVIEW OF SCIENTIFIC INSTRUMENTS | - |
dc.citation.title | REVIEW OF SCIENTIFIC INSTRUMENTS | - |
dc.citation.volume | 88 | - |
dc.citation.number | 11 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | TRANSITION RADIATION | - |
dc.subject.keywordPlus | CRYSTAL | - |
dc.subject.keywordPlus | COEFFICIENTS | - |
dc.subject.keywordPlus | ATTENUATION | - |
dc.subject.keywordPlus | BEAMLINE | - |
dc.subject.keywordPlus | DESIGN | - |
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