[en] IHEP has rich program devoted to the spin physics studies. New experimental program will significantly increase the number of reaction investigated at large kinematic region. The experiment will measure different polarization variables in inclusive and exclusive reactions, including single- and double-spin asymmetry, polarization, spin transfer parameters. One of the most important task is the creation of the polarized beam and especially polarized anti-proton beam.

[en] With several Laboratories having shown how bent crystals can be used to steer particle beams, a team working at the Institute for High Energy Physics (IHEP) at Serpukhov, near Moscow, has shown how these crystals can also be used to focus particle beams

[en] The paper considers possibility to accelerate polarized beam in the IHEP accelerator complex (including first stage of the UNK). The scheme of preserving beam polarization is described for all acceleration stages up to 400 GeV beam energy. Polarization and intensity of the polarized proton beam are estimated. The suggested scheme includes using two Siberian snakes in opposite straight sections of the UNK-1, where each snake consists of five dipole magnets. In the U-70 it is suggested to use one helical Siberian snake, which is turned on adiabatically at 10 GeV, and four pulsed quadrupoles. To incorporate the snake into the accelerator lattice it is proposed to make modification of one superperiod. This would make a 13 m long straight section. Spin depolarization in the Booster is avoided by decreasing the extraction energy to 0.9 GeV. Then no additional hardware is required in the Booster

[en] An abrupt increase in the number of (oppositely) charged pion pairs with small relative momenta has been seen at the proton synchrotron at the Institute for High Energy Physics, Serpukhov, near Moscow

[en] A new concept of large area photomultiplier based on MCPs was conceived for JUNO by the scientists in IHEP, and with the collaborative work of the MCP–PMT collaboration in China, 8 in. and 20 in. prototypes were produced. Test results show that this type of MCP–PMT can have good SPE performance as the traditional dynode type PMTs.

[en] The technique of the segmented sandwich-calorimeters with wavelength-shifting readout, especially its large-scale application in big detectors, requires enormous quantities of a cheap scintillator tiles of moderate dimensions (20 x 20 cm"2). Initial trials carried out in the Institute for High Energy Physics (IHEP), Protvino, Russia almost ten years ago showed that manufacturing such scintillator tiles was possible using an ordinary commercially-available granulated optical polystyrene, an existing technology of plastic dyeing, and a well-known process of the injection moulding, used to produce plastic goods (like buttons!)

[en] The calculations of the intensity of radiation in the crystal undulator for the conditions close to ones, which take place for IHEP undulator experiment, were carried out. Motion of positrons in the crystal undulator represents a superposition of the two types of motion: quasiperiodic motion between groves of the undulator and the similar motion in the channeling regime. Our calculations take into account the influence of the channeling motion on the intensity of the undulator radiation. The both parameters, characterizing the each type of motion, are larger then 1. The obtained results will be used for the comparison with the experimental data

[en] The project of the IHEP Accelerating and Storage Complex (UNK) has repeatedly been reported and discussed. It envisages a possibility to accelerate in the UNK protons up to 3 TeV and provide collisions of 6 TeV c.m.s. energy beams. Presently, the 1st phase of the machine, the fixed-target accelerator, is being built. (author) 5 refs., 8 figs., 1 tab

[en] With more and more large-scale scientific facilities are built, more and more HPC requirements are needed in IHEP. RDMA is a technology that allows servers in a network to exchange data in main memory without involving the processor, cache or operating system of either server, which can provide high bandwidth and low latency. There are two RDMA technologies which were InfiniBand and a relative newcomer called RoCE – RDMA over Converged Ethernet. This paper introduces the RoCE technology, we research and compare the performance of both IB and RoCE in IHEP data center, and we also evaluate the application scenarios of RoCE which can support our future technology selection in HEPS. In the end, we present our future plan.

[en] Full text: The CERN Accelerator School usually confines its activities to CERN's Member States, with the occasional exception of a joint school with its US counterpart. Recently a CAS team headed eastwards for a change, bound for Beijing's Institute of High Energy Physics (IHEP), for a school on particle physics and accelerator topics related to European plans for a Large Hadron Collider at CERN. The School was CAS' first in an Asian country and in many ways was an experiment. While lectures were aimed at a basic level for the benefit of the many students having their first taste of the subject, there was still time to handle more detailed questions from specialists. All local arrangements were handled entirely by the local Organizing Committee with admirable efficiency. In addition to H Lengeler, S. Myers, D. Treille, F. Pauss, W. Scandale and E. Wilson from CERN, the team included G. Horlitz (DESY), J. Perot (Saclay) and H.S. Chen, Z. Chuang and Z. Guo from IHEP. Lecturers' initial misgivings about how much of this tough material would be absorbed were soon dispelled. Each lecture had a onehour tutorial to iron out any problems, and these sessions became quite animated. So successful was the experiment that CAS plans to bring other Asian countries, including Japan and India into its circle of friends when time permits