- Guoli Wang, Harbin Institute of Technology (November 2011 - May 2012)
- Ralph (Max) Niedermaier (September 2011 - April 2012)
- Kaoru Hagiwara, KEK (January 14 -19, 2012)
- Choong Sun Kim, Yon Sei University (April - May, 2012)
- S.K. Kang, Seoul National Univ. of Technology (February 2013 - January 2014)
- Nick Setzer, University of Granada (March - April 2013)
- Kaoru Hagiwara, KEK (January 11-21, 2014 and March 3-14, 2014)
- Seong Youl Choi, Chonbuk National Univ. (February 2014 - January 2015)
- Ushoshi Maitra, Harish-Chandra Research Institute (October 2014)
- Tanumoy Mandal, Harish-Chandra Research Institute (October 2014)
- Chong Sheng Li, Peking University (November 2014)
- Kaoru Hagiwara, KEK (November 2014 & March 2015)
- Sin Kyu Kang, Seoul National Univ. of Science & Technology (February 2015)
- Choon Sun Kim, Yonsei University, Seoul, Korea (December 2014 - March 2015)
- Shoushan Bao, ShanDong University (August 2015 - August 2016)
- Yongcheng Wu,TsingHua Univ. (August 2015 - August 2016)
- Han Yuan, Harbin Institute of Tech (November 2015 - October 2016)
- Kaoru Hagiwara, KEK (September - October 2016)
- K.C. Kong, University of Kansas (September 2016 - August 2017)
- Zong-Guo Si, Shandong University (February 25 - March 17, 2017)
- Kaoru Hagiwara, KEK (March 31 - June 29, 2017)
- Tim Hamilton, Univ. of Richmond (July-August, 2017)