Search Results - "Qian, Houjun"

Direct measurement of photocathode time response in a high-brightness photoinjector by Loisch, Gregor, Chen, Ye, Koschitzki, Christian, Qian, Houjun, Gross, Matthias, Hannah, Adrian, Hoffmann, Andreas, Kalantaryan, Davit, Krasilnikov, Mikhail, Lederer, Sven, Li, Xiangkun, Lishilin, Osip, Melkumyan, David, Monaco, Laura, Niemczyk, Raffael, Oppelt, Anne, Sertore, Daniele, Stephan, Frank, Valizadeh, Reza, Vashchenko, Grygorii, Weilbach, Tobias

“…Electron photoinjectors provide high-brightness electron beams to numerous research applications in physics, chemistry, material, and life sciences…”
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Commissioning of Bunch Compressor to Compress Space Charge-Dominated Electron Beams for THz Applications by Lueangaramwong, Anusorn, Kongmon, Ekkachai, Li, Xiangkun, Boonpornprasert, Prach, Georgiev, Georgi, Krasilnikov, Mikhail, Aboulbanine, Zakaria, Adhikari, Gowri, Aftab, Namra, Gross, Matthias, Niemczyk, Raffael, Oppelt, Anne, Qian, Houjun, Richard, Christopher, Vashchenko, Grygorii, Weilbach, Tobias, Stephan, Frank

“…The high peak current of the electron beam was found to be the key parameter for the THz SASE FEL at the Photo Injector Test facility at DESY in Zeuthen…”
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Slice energy spread measurement in the low energy photoinjector by Qian, Houjun, Krasilnikov, Mikhail, Lueangaramwong, Anusorn, Li, Xiangkun, Lishilin, Osip, Aboulbanine, Zakaria, Adhikari, Gowri, Aftab, Namra, Boonpornprasert, Prach, Georgiev, Georgi, Good, James, Gross, Matthias, Koschitzki, Christian, Niemczyk, Raffael, Oppelt, Anne, Shu, Guan, Stephan, Frank, Vashchenko, Grygorii, Weilbach, Tobias

“…Slice energy spread is one of the key parameters in free electron laser optimizations, but its accurate measurement is not straightforward. Two recent studies…”
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Photoemission and degradation of semiconductor photocathode by Huang, Peng-Wei, Qian, Houjun, Du, Yingchao, Huang, Wenhui, Zhang, Zhen, Tang, Chuanxiang

“…In state of the art photoemission electron sources, the transverse emittance of the electron beam is approaching its intrinsic value from the cathode. To…”
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Analysis of photoinjector transverse phase space in action and phase coordinates by Qian, Houjun, Krasilnikov, Mikhail, Aboulbanine, Zakaria, Adhikari, Gowri, Aftab, Namra, Boonpornpras, Prach, Georgiev, Georgi, Good, James, Gross, Matthias, Koschitzki, Christian, Li, Xiangkun, Lishilin, Osip, Lueangaramwong, Anusorn, Niemczyk, Raffael, Oppelt, Anne, Shu, Guan, Stephan, Frank, Vashchenko, Grygorii, Weilbach, Tobias

“…Photoinjectors are the main high brightness electron sources for x-ray free electron lasers (XFELs). Photoinjector emittance reduction is one of the key knobs…”
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Anomalous correlation between quantum efficiency and transverse momentum spread in semiconductor cathode photoemission by Huang, Peng-Wei, Qian, Houjun, Chen, Ye, Gross, Matthias, Isaev, Igor, Koschitzki, Christian, Krasilnikov, Mikhail, Lal, Shankar, Lederer, Sven, Li, Xiangkun, Lishilin, Osip, Melkumyan, David, Monaco, Laura, Michelato, Paolo, Niemczyk, Raffael, Oppelt, Anne, Sertore, Daniele, Shaker, Hamed, Shu, Guan, Stephan, Frank, Tang, Chuanxiang, Vashchenko, Grygorii

“…The next generation of accelerator based scientific facilities, such as the megahertz repetition rate free electron laser and electron-ion collider, relies on…”
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Single shot cathode transverse momentum imaging in high brightness photoinjectors by Huang, Peng-Wei, Qian, Houjun, Chen, Ye, Filippetto, Daniele, Gross, Matthias, Isaev, Igor, Koschitzki, Christian, Krasilnikov, Mikhail, Lal, Shankar, Li, Xiangkun, Lishilin, Osip, Melkumyan, David, Niemczyk, Raffael, Oppelt, Anne, Sannibale, Fernando, Shaker, Hamed, Shu, Guan, Stephan, Frank, Tang, Chuanxiang, Vashchenko, Grygorii, Wan, Weishi

“…In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low thermal…”
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The design of high-brightness ERL-FEL injector based on VHF electron gun by Chen, Xiuji, Liu, Zipeng, Chen, Si, Huang, Xuan, Gu, Duan, Qian, Houjun, Wang, Dong, Deng, Haixiao

“…In the past decade, the fourth-generation light source based on the combination of Energy Recovery Linac (ERL) and Free-Electron Laser (FEL) using…”
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Observation of High Transformer Ratio Plasma Wakefield Acceleration by Loisch, Gregor, Asova, Galina, Boonpornprasert, Prach, Brinkmann, Reinhard, Chen, Ye, Engel, Johannes, Good, James, Gross, Matthias, Grüner, Florian, Huck, Holger, Kalantaryan, Davit, Krasilnikov, Mikhail, Lishilin, Osip, de la Ossa, Alberto Martinez, Mehrling, Timon J, Melkumyan, David, Oppelt, Anne, Osterhoff, Jens, Qian, Houjun, Renier, Yves, Stephan, Frank, Tenholt, Carmen, Wohlfarth, Valentin, Zhao, Quantang

“…Particle-beam-driven plasma wakefield acceleration (PWFA) enables various novel high-gradient techniques for powering future compact light-source and…”
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Development of S-band photocathode RF guns at Tsinghua University by Zheng, Lianmin, Du, Yingchao, Zhang, Zhe, Qian, Houjun, Yan, Lixin, Shi, Jiaru, Zhang, Zhen, Zhou, Zheng, Wu, Xiaowei, Su, Xiaolu, Wang, Dong, Tian, Qili, Huang, Wenhui, Chen, Huaibi, Tang, Chuanxiang

“…This study aims to explain the development of S-band photocathode RF guns at Tsinghua University, with especial attention on the progress of guns developed…”
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Generation of quasi continuous-wave electron beams in an L-band normal conducting pulsed RF injector for laboratory astrophysics experiments by Chen, Ye, Loisch, Gregor, Gross, Matthias, Jao, Chun-Sung, Krasilnikov, Mikhail, Oppelt, Anne, Osterhoff, Jens, Pohl, Martin, Qian, Houjun, Stephan, Frank, Vafin, Sergei

“…We report on an approach to produce quasi continuous-wave (cw) electron beams with an average beam current of milliamperes and a mean beam energy of a few MeV…”
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Lewis‐Base‐Catalyzed Alkylation Reaction of 4‐Hydroxycoumarins with Allenoates: Regioselective Synthesis of 2H‐[3,2‐c] Furocoumarins and 4‐Hydroxycoumarin Vinyl Ether Derivatives by Su, Qiuling, Qian, Houjun, Li, Zhengyi, Sun, Xiaoqiang, Wang, Zhiming

“…A milder, more regioselective and practical approach to C3 or O‐alkylation reaction of 4‐hydroxycoumarins has been established. Both 2H‐[3,2‐c] furocoumarins…”
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Lewis‐Base‐Catalyzed Alkylation Reaction of 4‐Hydroxycoumarins with Allenoates: Regioselective Synthesis of 2 H ‐[3,2‐c] Furocoumarins and 4‐Hydroxycoumarin Vinyl Ether Derivatives by Su, Qiuling, Qian, Houjun, Li, Zhengyi, Sun, Xiaoqiang, Wang, Zhiming

“…Abstract A milder, more regioselective and practical approach to C 3 or O‐alkylation reaction of 4‐hydroxycoumarins has been established. Both 2 H ‐[3,2‐c]…”
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FLASHlab@PITZ: New R&D platform with unique capabilities for electron FLASH and VHEE radiation therapy and radiation biology under preparation at PITZ by Stephan, Frank, Gross, Matthias, Grebinyk, Anna, Aboulbanine, Zakaria, Amirkhanyan, Zohrab, Budach, Volker, Ehrhardt, Vincent Henrique, Faus-Golfe, Angeles, Frohme, Marcus, Germond, Jean-Francois, Good, James David, Grüner, Florian, Kaul, David, Krasilnikov, Mikhail, Leavitt, Ron, Leemans, Wim, Li, Xiangkun, Loisch, Gregor, Müller, Frieder, Müller, Georg, Obier, Frank, Oppelt, Anne, Philipp, Sebastian, Qian, Houjun, Reindl, Judith, Riemer, Felix, Sack, Martin, Schmitz, Michael, Schnautz, Tobias, Schüller, Andreas, Staufer, Theresa, Stegmann, Christian, Tsakanova, Gohar, Vozenin, Marie-Catherine, Weise, Hans, Worm, Steven, Zips, Daniel

“…[Display omitted] •FLASH radiation therapy can reduce side effects in cancer therapy.•PITZ accelerator offers unique parameter range for electron FLASH…”
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FLASH l a b @PITZ : New R&D platform with unique capabilities for electron FLASH and VHEE radiation therapy and radiation biology under preparation at PITZ by Stephan, Frank, Gross, Matthias, Grebinyk, Anna, Aboulbanine, Zakaria, Amirkhanyan, Zohrab, Budach, Volker, Ehrhardt, Vincent Henrique, Faus-Golfe, Angeles, Frohme, Marcus, Germond, Jean-Francois, Good, James David, Grüner, Florian, Kaul, David, Krasilnikov, Mikhail, Leavitt, Ron, Leemans, Wim, Li, Xiangkun, Loisch, Gregor, Müller, Frieder, Müller, Georg, Obier, Frank, Oppelt, Anne, Philipp, Sebastian, Qian, Houjun, Reindl, Judith, Riemer, Felix, Sack, Martin, Schmitz, Michael, Schnautz, Tobias, Schüller, Andreas, Staufer, Theresa, Stegmann, Christian, Tsakanova, Gohar, Vozenin, Marie-Catherine, Weise, Hans, Worm, Steven, Zips, Daniel

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Analysis and experiments of a waveguide post's influence on photocathode RF gun by Qian, Houjun, Tang, Chuanxiang, Zheng, Shuxin, Tong, Dechun, Chen, Huaibi, Huang, Wenhui, Guan, Xin

“…Several BNL/KEK/SHI type photocathode RF guns have been fabricated for high-quality electron beams in Accelerator Laboratory of Tsinghua University. This paper…”
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The design of high-brightness ERL-FEL injector based on VHF electron gun by Chen, Xiuji, Liu, Zipeng, Chen, Si, Gu, Duan, Huang, Xuan, Qian, Houjun, Wang, Dong, Deng, Haixiao

“…In the past decade, the fourth-generation light source based on the combination of Energy Recovery Linac (ERL) and Free-Electron Laser (FEL) using…”
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Analysis of photoinjector transverse phase space in action and phase coordinates by Qian, Houjun, Krasilnikov, Mikhail, Aboulbanine, Zakaria, Adhikari, Gowri, Aftab, Namra, Boonpornpras, Prach, Georgiev, Georgi, Good, James, Gross, Matthias, Koschitzki, Christian, Li, Xiangkun, Lishilin, Osip, Lueangaramwong, Anusorn, Niemczyk, Raffael, Oppelt, Anne, Shu, Guan, Stephan, Frank, Vashchenko, Grygorii, Weilbach, Tobias

“…Photoinjectors are the main high brightness electron sources for X-ray free electron lasers (XFEL). Photoinjector emittance reduction is one of the key knobs…”
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Slice energy spread measurement in the low energy photoinjector by Qian, Houjun, Krasilnikov, Mikhail, Lueangaramwong, Anusorn, Li, Xiangkun, Lishilin, Osip, Aboulbanine, Zakaria, Adhikari, Gowri, Aftab, Namra, Boonpornprasert, Prach, Georgiev, Georgi, Good, James, Gross, Matthias, Koschitzki, Christian, Niemczyk, Raffael, Oppelt, Anne, Shu, Guan, Stephan, Frank, Vashchenko, Grygorii, Weilbach, Tobias

“…Slice energy spread is one of the key parameters in free electron laser optimizations, but its accurate measurement is not straightforward. Two recent studies…”
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Single shot cathode transverse momentum imaging in high brightness photoinjectors by Huang, Peng-Wei, Qian, Houjun, Chen, Ye, Filippetto, Daniele, Gross, Matthias, Isaev, Igor, Koschitzki, Christian, Krasilnikov, Mikhail, Lal, Shankar, Li, Xiangkun, Lishilin, Osip, Melkumyan, David, Niemczyk, Raffael, Oppelt, Anne, Sannibale, Fernando, Shaker, Hamed, Shu, Guan, Stephan, Frank, Tang, Chuanxiang, Vashchenko, Grygorii, Wan, Weishi

“…Phys. Rev. Accel. Beams 23, 043401 (2020) In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector…”
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