| Autor: |
V. Danilov, A. Aleksandrov, S. Assadi, S. Henderson, N. Holtkamp, T. Shea, A. Shishlo, Y. Braiman, Y. Liu, J. Barhen, T. Zacharia |
| Jazyk: |
angličtina |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
Physical Review Special Topics. Accelerators and Beams, Vol 6, Iss 5, p 053501 (2003) |
| Druh dokumentu: |
article |
| ISSN: |
1098-4402 |
| DOI: |
10.1103/PhysRevSTAB.6.053501 |
| Popis: |
This paper presents a scheme for three-step laser-based stripping of an H^{-} beam for charge exchange injection into a high-intensity proton ring. First, H^{-} atoms are converted to H^{0} by Lorentz stripping in a strong magnetic field, then neutral hydrogen atoms are excited from the ground state to upper levels by a laser, and the remaining electron, now more weakly bound, is stripped in a strong magnetic field. The energy spread of the beam particles gives rise to a Doppler broadened absorption linewidth, which makes for an inefficient population of the upper state by a narrow-band laser. We propose to overcome this limitation with a “frequency sweeping” arrangement, which populates the upper state with almost 100% efficiency. We present estimates of peak laser power and describe a method to reduce the power by tailoring the dispersion function at the laser-particle beam interaction point. We present a scheme for reducing the average power requirements by using an optical ring resonator. Finally, we discuss an experimental setup to demonstrate this approach in a proof-of-principle experiment. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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