GdBCO bulk superconducting helical undulator for x-ray free-electron lasers
Marco Calvi, Sebastian Hellmann, Eduard Prat, Thomas Schmidt, Kai Zhang, Anthony R. Dennis, John H. Durrell, Mark D. Ainslie
DOI 10.1103/PhysRevResearch.5.L032020 · Physical Review Research
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Abstract
We report on the performance of a new type of helical undulator based on bulk single-grain GdBa2Cu3O7−δ high-temperature superconductors. The 104-mm-long prototype with a period length of 16 mm and a magnetic aperture of 4 mm achieves an on-axis field above 2.5 T at a temperature of 10 K. This undulator technology has the potential to change the design parameters of future x-ray free-electron lasers, making them more compact and powerful.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| GdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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