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Title |
Page |
| MOPPH060 |
Start-to-End Simulations for the 10 GeV PAL-FEL Project
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125 |
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- E.-S. Kim
Kyungpook National University, Daegu
- M. Yoon
POSTECH, Pohang, Kyungbuk
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The PAL-FEL is a fourth-generation ligth source project based on the SASE FEL concept that is in a proposing stage. It consists of a photoinjector, two stages of bunch compressors in a 10 GeV S-band linac and a undulator to generate intense radiation pulses of around 5 GW at 0.1 nm. We have performed beam tracking from injector to the undulator to examine the sensitivities to beam quality. The stuides show that a good quality beam can be maintained through the 10 GeV linac and delivered to undulator under the allowable rf system jitter errors and lattice errors. It is shown that the results of these simulations are well within our FEL performance goals. Simulation results of pulse-to-pulse stabilities due to variation of the rf parameters are also presented.
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| TUBAU05 |
A 0.1 nm SASE FEL at Pohang Accelerator Laboratory
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218 |
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- M. Yoon
POSTECH, Pohang, Kyungbuk
- I. M. Hwang
CHEP, Daegu
- W. H. Hwang, D. E. Kim, S. J. Park
PAL, Pohang, Kyungbuk
- E.-S. Kim
Kyungpook National University, Daegu
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Since January 2008, design study of a free-electron laser has been in progress at Pohang Accelerator Laboratory (PAL) aiming at producing hard X-ray of 0.1 nm wavelength. Electron energy of 10 GeV has been chosen to fit the facility inside the existing PAL site. In-vacuum undulators of 120 meter long (including breaks) with 5.3 mm gap combined with a 800 meter-long conventional S-band rf linac are expected to generate intense x-ray pulses of 5 GW peak power at the saturation length of 100 m. The start-to-end simulation results support initial design parameters based on the theory. Effect of undulator wakefields are examined and 30%reduction in power is anticipated.
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| TUPPH035 |
Optimization and Sensitivity Studies for PAL FEL Injector
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320 |
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- I. M. Hwang, M. Yoon
POSTECH, Pohang, Kyungbuk
- E.-S. Kim
Kyungpook National University, Daegu
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Pohang Accelerator Laboratory (PAL) is preparing a 0.1nm free electron laser based on Self-Amplified Spontaneous Emission (SASE). S-band rf linear accelerator will produce a 10GeV electron beam and in-vacuum undulators of 5mm gap make output radiation power of 5GW. To determine basic design parameters, start-to-end tracking simulations are performing by several codes. We present simulation result of injector part by PARMELA. It consists of electron gun, solenoids, two 3m linac and quadrupoles. The photoinjector produces 10ps long electron bunches of 1nC with a normalized transverse emittance of less than 1mm mrad at 135MeV. Sensitivity studies of laser pulse, solenoid and linac are presented also.
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