| Autor: |
B Kergosien, P Joly, G Devanz, R. Chaput, J. Lesrel |
| Rok vydání: |
1997 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 393:474-478 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/s0168-9002(97)00549-4 |
| Popis: |
We have designed a setup to measure the transverse emittance at the CLIO accelerator exit, based on the “3 gradients” method. The beam transverse size is measured simply by scanning it with a steering coil across a fixed jaw and recording the transmitted current, at various quadrupole strengths. A code then performs a complete calculation of the emittance using the transfer matrix of the quadrupole instead of the usual classical lens approximation. We have studied the influence of various parameters on the emittance: Magnetic field on the e-gun and the peak current. We have also improved a little the emittance by replacing a mismatched pipe between the buncher and accelerating section to avoid wake-field effects; The resulting improvements of the emittance have led to an increase in the FEL emitted power. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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