• Title/Summary/Keyword: Pohang Korea

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Synchrotron Grazing Incidence X-ray Scattering and Its Applications in Polymer Nanotechnology

  • Ree, Moon-Hor;Lee, Byeong-Du;Yoon, Jin-Hwan;Heo, Kyu-Young;Jin, Kyeong-Sik;Jin, Sang-Woo;Kim, Hyun-Chul;Kim, Gha-Hee;Choi, Seung-Chul;Oh, Weon-Tae;Park, Young-Hee;Hwang, Yong-Taek;Kim, Jong-Seong
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.120-120
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    • 2006

  • In our study grazing incidence X-ray scattering (GIXS) measurements with synchrotron radiation sources were conducted statically and in-situ for a series of nanoscale thin films prepared from nanoporous dielectrics, block copolymers, brush polymers, and molecular assemblies. All GIXS measurements were performed at the Pohang Accelerator Laboratory. The measured scattering data were analyzed in detail by using newly developed GIXS scattering theory. All GIXS results will be discussed in details with considering the materials chemistry and nanostructure formation process parameters.

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PULSED NEUTRON FACILITY BASED ON AN ELECTRON LINAC

  • Kim, Guin-Yun;Son, Dong-Chul;Lee, Young-Seok;Ko, In-Soo;Cho, Moo-Hyun;Namkung, Won;Chang, Jong-Hwa
    • Journal of Radiation Protection and Research
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    • v.26 no.3
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    • pp.327-331
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    • 2001

  • The Pohang Neutron Facility based on an electron linac was constructed in order to construct the infrastructure for nuclear data production in Korea. It consists of a 100-MeV electron linac, a water-cooled Ta target, and an 11-m time-of-flight path. We measured the time-of-flight path length, the neutron energy spectra for different water levels inside the moderator, and the neutron total cross sections of polyethylene and copper by the transmission method.

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Impedance Calculation for Vacuum Components in Pohang Light Source Storage Ring

  • Ju, Yeong-Do;Lee, Byeong-Jun;Son, Yeong-Uk;Yu, In-Ha;Jeon, Myeong-Hwan;Park, In-Su;Kim, Seung-Hwan;Ha, Tae-Gyun;Gong, Hyeong-Seop;Son, Yun-Gyu;Park, Yong-Jeong;Park, Jong-Do;Nam, Sang-Hun
    • Proceedings of the Korean Vacuum Society Conference
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    • 2014.02a
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    • pp.151.2-151.2
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    • 2014

  • Broadband impedances for the 3-GeV pohang light source-II (PLS-II) storage ring have been numerically estimated using a full three dimensional finite-difference time-domain code, CST particle studio. The total broadband impedance of all the vacuum components was estimated as 0.256 ohm, which is a small fraction of the total machine impedance budget.

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