Publications
Publication Information
| Title | First Operation of an FEL in Same-cell Energy Recovery Mode |
| Authors | George Neil, Steve Benson, George Biallas, Courtlandt Bohn, David Douglas, H. Dylla, Richard Evans, Jock Fugitt, Joseph Gubeli, Richard Hill, Kevin Jordan, Geoffrey Krafft, Rui Li, Nikolitsa Merminga, Dick Oepts, Philippe PIOT, Joseph Preble, Michelle Shinn, Timothy Siggins, Richard Walker, Byung Yunn |
| JLAB number | JLAB-ACT-99-06 |
| LANL number | (None) |
| Other number | DOE/ER/40150-1428 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
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Journal Compiled for Nuclear Instruments & Methods in Physics Research, Section A Volume 445 Issue 1-3 Page(s) 192-196 Refereed | |
| Publication Abstract: | The driver for Jefferson Lab's kW-level infrared free-electron laser (FEL) is a superconducting, recirculating accelerator that recovers 75% of the electron-beam power and converts it to radio frequency power. As reported in FEL'98, the accelerator operated ''straight-ahead'' to deliver 38 MeV, 1.1 mA cw current for lasing at wavelengths in the vicinity of 5 microns. The waste beam was sent directly to a dump, bypassing the recirculation loop. Stable operation at up to 311 W cw was achieved in this mode. The machine has now recirculated cw average current up to 4.6 mA and has lased cw with energy recovery up to 1,720 W output at 3.1 microns. This is the first FEL to ever operate in the ''same-cell'' energy recovery mode. Energy recovery offers several advantages (reduced RF power and dramatically reduced radio-nuclide production at the dump) and several challenges will be described. The authors have observed heating effects in the mirrors which will be described. They will also report |
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| Group: | FEL/Light Sources Core |
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