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A high-power, high-repetition-rate THz source for pump–probe experiments at Linac Coherent Light Source II

Journal Article · · Journal of Synchrotron Radiation (Online)
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [3];  [3];  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); SLAC NATIONAL ACCELERATOR LABORATORY
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
+ Show Author Affiliations
Experiments using a THz pump and an X-ray probe at an X-ray free-electron laser (XFEL) facility like the Linac Coherent Light Source II (LCLS II) require frequency-tunable (3 to 20 THz), narrow bandwidth (~10%), carrier-envelope-phase-stable THz pulses that produce high fields (>1 MV cm–1) at the repetition rate of the X-rays and are well synchronized with them. Herein, a two-bunch scheme to generate THz radiation at LCLS II is studied: the first bunch produces THz radiation in an electromagnet wiggler immediately following the LCLS II undulator that produces X-rays from the second bunch. The initial time delay between the two bunches is optimized to compensate for the path difference in THz transport. The two-bunch beam dynamics, the THz wiggler and radiation are described, as well as the transport system bringing the THz pulses from the wiggler to the experimental hall.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC02-76SF00515
OSTI ID:
1632164
Alternate ID(s):
OSTI ID: 1774316
Journal Information:
Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 4 Vol. 27; ISSN 1600-5775; ISSN JSYRES
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (25)

Table 1(p. 20)table Table 1
Table 2(p. 21)table Table 2
Table 3(p. 21)table Table 3
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Related Subjects

42 ENGINEERING
THz
XFEL
femtosecond
pump–probe
synchronization