Introduction of HIAF project
Jiancheng Yang, Jiawen Xia, Guoqing Xiao, Hushan Xu, Hongwei Zhao, Xiaohong Zhou, Yuan He,
Youjin Yuan, Liangting Sun, Xinwen Ma, Wenlong Zhan, and HIAF team
Institute of Modern Physics, CAS, Lanzhou, 730000, China
HIAF ( High Intensity heavy ion Accelerator Facility ) is a new accelerator facility to be built
in the next ten years in China. The HIAF project aims to expand nuclear and related researches
into presently unreachable region and give scientists possibilities to conduct cutting-edge
researches. According to the present plan, there will be two construction phases. The main
scientific motivation for the first phase includes the researches such as high energy density (HED)
matter physics, the effective strong interaction binding atomic nuclide and the creation of the
trans-iron elements in universe. The second phase of the HIAF project will focus on research of
intrinsic structure of nucleon by electron-ion collision (EIC). The accelerator complex of the HIAF
first phase consists of a 25MeV/u high current superconducting ion linac (iLinac) as an injector, a
34 Tm booster ring (BRing) for phase painting beam accumulation supported by electron cooling
and beam acceleration, a 43 Tm high energy storage ring for beam stacking and beam
compression (CRing)，and a high precision spectrometer ring (SRing) both for internal target
experiments and beam quality improvement through stochastic precooling and electron cooling.
The unique features of the first phase of HIAF are high current pulsed injection beams from the
iLinac and high intensity heavy ion beams with ultra-short bunch from the CRing. The cooled rare
isotope beams also will be prepared through projectile-fragmentation (PF) method. A electron
accelerator complex will be developed for researches based on the electron-ion collision (EIC) in
the second phase. This talk will present an overview of the HIAF project with main focus on
conceptual design of the HIAF accelerator, key technology challenge and related R&D.
Fig. 1 The proposed experiment terminals of HIAF project