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CERN Accelerating science

CERN Document Server Sök i 6 journaler efter:  Sökningen tog 1.37 sekunder. 
1.
Recent Experiment Results on Fast Ion Instability at 2.5 GeV PLS / Kim Eun San ; Han, Yeung-Jin ; Hukuma, Hitoshi ; Ikeda, Hitomi ; Park, Chong-Do ; Park, Sung-Ju ; Soo Ko In ; Yun Huang Jung
We present recent experiment results on the fast ion instability that were performed at the PLS storage ring. With higher vacuum pressures of three orders of magnitude than nominal one by He gas injection into the ring, increases of a factor of around three in the vertical beam size were observed by interferometer system. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.466
2.
Beam Position Monitor at the PLS BTL / Kim, Sung-Chul ; Chun, Myung-Hwan ; Han, Yeung-Jin ; Tae Kim, Do ; Woo Lee, Wol ; Yun Huang Jung
Electron Linac at the Pohnag Accelerator Laboratory (PAL) has been operated continuously as the full energy injector for storage ring. Linac and storage ring energy has been 2.0 GeV since Dec. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3289
3.
Design Considerations for the Stability Improvement of Klystron-Modulator for PAL XFEL / Oh, Jong-Seok ; Han, Yeung-Jin ; Namkung, Won ; Soo Ko In ; Soo Park, Soung
The PAL linac is planed to be converted to a SASE-XFEL facility (PAL XFEL) that supplies coherent X-rays down to 0.3-nm wavelength. PAL XEL requires a 3-GeV driver linac and a 60-m long in-vacuum undulator to realize an X-ray SASE-FEL. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1165
4.
The Digital Feedback RF Control System of the RFQ and DTL1 for 100 MeV Proton Linac of PEFP / Yu In Ha ; Chel Yoon Jong ; Cho, Yong-Sub ; Han, Yeung-Jin ; Kang Heung Sik ; Kim, Sung-Chul ; Kwon, Hyeok-Jung ; Park, In-Soo ; Tae Kim, Do ; Tae Seol, Kyung
The 100 MeV Proton linear accelerator (Linac) for the PEFP (Proton Engineering Frontier Project) will include 1 RFQ and 1 DTL1 at 350 MHz as well as 7 DTL2 cavities at 700 MHz. The low level RF system with the digital feedback RF control provides the field control to accelerate a 20mA proton beam from 50 keV to 20 MeV with a RFQ and a DTL1 at 350M Hz. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1443
5.
Suppression of the Longitudinal Coupled-Bunch Instabilities by the RF Phase Modulation in the Pohang Light Source / Hwang, Ilmoon ; Han, Yeung-Jin ; Kim Eun San ; Yang Jae Seok ; Yoon, Moohyun
In the 2.5 GeV Pohang Light Source, we have investigated the suppression of the longitudinal coupled instabilities (CBI) caused by higher order modes (HOMs) of RF cavities. At higher beam current than 170 mA the 758 MHz or 1300 MHz HOMs occurred and the beam could be unstable. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1970
6.
Impedance Analysis of Longitudinal Bunch Shape Measurements at PLS / Hwang, Ilmoon ; Han, Yeung-Jin ; Kim Eun San ; Yoon, Moohyun
We measured the longitudinal bunch shape by streak camera at 2.5 GeV Pohang Light Source. The impedances estimated by a series R+L model indicate a resistance R= 960 ohm, an inductance L= 80 nH and a longitudinal impedance Z/n= 0.53 ohm [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TPAT011

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