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10:00	0:40	Prof. Alexander Lutovinov Prof. Alexander Lutovinov IKI	Russian high energy astrophysics program from SRG to the future missions
The report will present the Russian research program in the field of high-energy astrophysics from the SRG observatory to the future missions. An especial attention will be devoted to the Mikhail Pavlinsky ART-XC telescope onboard the SRG observatory and the MVN instrument onboard ISS and their results.
10:00	0:40	Prof. Alexander Lutovinov Prof. Alexander Lutovinov IKI
Russian high energy astrophysics program from SRG to the future missions

10:40	0:40	Vasiliy Levin Vasiliy Levin IKI	X-ray instrumentation activities at IKI
Several types of X-ray detectors for astrophysical telescopes and spectrometers have been developed at IKI. A multi-element X-ray detection module (MXDM) based on 32 CdZnTe crystals (4.0x4.0x2.5 mm size each) has been developed for a coded mask telescope. A pixel detector based on a CdTe crystal and the VA32TA ASIC has been developed for the KNA MVN project (the Russian segment of the ISS). The detector has 32 elements (3.1 x 3.1 mm size) and is designed to perform spectrometry in the energy range from 4 to 120 keV. A double sided strip detector based on a CdTe crystal and the VA64TA1 ASIC has been developed for the Pavlinsky ART-XC X-ray telescope (Spektr-RG spacecraft). The detector contains 48 x 48 image elements (595 x 595 μm size) and operates in the energy range from 4 to 118 keV (the telescope's operating range is from 4 to 30 keV). In the course of the R&D on the Gamma-400 topic, a design for a silicon detector with 192x192 pixels of 150 μm in size was developed. Each pixel has a DepFET (Depleted Field Effect Transistor) semiconductor structure. Within the R&D project, a reduced-size model of this detector (32x32 pixels, 150 μm) was manufactured and tested. For the R&D project on the NA MVN-M2 topic, a design for a high-speed silicon detector based on SDD (Silicon Drift Detector) structures was developed. The detector has 23 hexagonal SDD structures of 12.5 mm2 in area each. The SDDASIC3 IC was developed, manufactured, and tested to process the detector signals. Work is currently underway to design a detector with 1024 SDD structures (32x32 pixels) and a ASIC for front-end signal processing.
10:40	0:40	Vasiliy Levin Vasiliy Levin IKI
X-ray instrumentation activities at IKI

11:20	0:30	Coffee Break

11:50	0:40	Prof. Shuang-Nan Zhang Prof. Shuang-Nan Zhang Institute of High Energy Physics	Probing the Extreme Universe with HERD and eXTP
I will briefly introduce the two flagship space missions of China: the High Energy Cosmic-ray Detection (HERD) facility approved for launch onto the China Space Station in 2028, and the enhanced X-ray Timing and Polarimetry (eXTP) observatory approved for launch into orbit in 2030. Both missions are fully funded and will enter into Phase-C later this year for full implementation. The two missions are within the science theme of "extreme universe" in the "mid- and long-term space science strategic plan of China (2024-2050)" released by the Chinese government in 2024.
11:50	0:40	Prof. Shuang-Nan Zhang Prof. Shuang-Nan Zhang Institute of High Energy Physics
Probing the Extreme Universe with HERD and eXTP

12:30	0:40	Prof. Xilu Wang Prof. Xilu Wang Institute of High Energy Physics, Chinese Academy of Sciences	MeV Gamma-ray Astronomy and the Future Missions Developed in IHEP
MeV gamma rays are indispensable probes for high-energy astrophysics research, providing unique information to help address frontiers, such as dark matter, the radiation mechanisms of compact objects, the origin of cosmic rays, and etc. In particular, MeV range is the domain of nuclear gamma-ray lines that can provide a direct probe of the nuclear processes (such as supernovae, nucleosynthesis, and galactic chemical evolution) in our Universe to explore the fundamental problem of the origin of heavy elements in the Galaxy and beyond. Despite recent improvements in many areas of multi-wavelength astronomy, the 0.1-100 MeV part of the electromagnetic spectrum is poorly covered by current detections. The current MeV observation sensitivity is at least about 1-2 orders of magnitude lower than the sensitivity in other energy bands. Studying the still largely unexplored MeV domain of astronomy would provide for a rich observatory science and enable discoveries of a wide range of extreme-process events. In this talk, I will introduce the concepts and current status of the MeV missions developed in IHEP: the MeV Gamma-Ray Observatory (MeVGRO) satellite survey mission with a large field of view and broad MeV gamma-ray energy coverage and the Positron Annihilation Imaging high-Resolution Spectrometer (PAIRS) balloon project with high energy resolution and angular resolution.
12:30	0:40	Prof. Xilu Wang Prof. Xilu Wang Institute of High Energy Physics, Chinese Academy of Sciences
MeV Gamma-ray Astronomy and the Future Missions Developed in IHEP

13:10	1:00	Lunch

14:10	0:40	Prof. Ruizhi Yang Prof. Ruizhi Yang University of Science and Technology of China	Measuring cosmic rays using gamma-ray astronomy
Cosmic ray (CR) is one of the most important components in the interstellar medium (ISM) and the origin of CRs remains as a mystery. The diffusion of CRs in turbulent magnetic fields erases the information on the distribution of CR accelerators to a large extent. The energy dependent diffusion of CRs also significantly modifies the initial (acceleration) spectra of CRs. In this regard, gamma-rays, the secondary products of interactions of CRs with gas and photons in the ISM, provide us more information about the origin of CRs. More specifically, the gamma-ray emissions associated with gas, can be used to study the distribution of CRs throughout the Galaxy; the discrete gamma-ray sources can elucidate the locations of individual CR accelerators. In this talk I will review the recent advances of the gamma-ray astronomy and focus on their implications to CR sciences.
14:10	0:40	Prof. Ruizhi Yang Prof. Ruizhi Yang University of Science and Technology of China
Measuring cosmic rays using gamma-ray astronomy

14:50	0:40	Prof. Wei Cui Prof. Wei Cui Tsinghua University	Hot Universe Baryon Surveyor
Hot Universe Baryon Surveyor (HUBS) is a proposed space-borne observatory for X-ray astronomy. The primary scientific objective of the mission is to fill a void in probing circumgalactic hot gas and thus to advance our knowledge of baryon cycling in galaxy ecosystems. More specifically, HUBS aims at directly detecting soft X-ray emission from diffuse gas of temperature exceeding 10$^6$ K, which is postulated to permeate the extended halo of galaxies (and also the cosmic web). Although some indirect evidence exists, the presence of such hot gas has yet been well established observationally, due to the lack of effective tools to probe it. In this talk, I will describe the design of HUBS, focusing on its scientific payload, which employs cutting-edge superconducting technologies, and on the progress in technology development.
14:50	0:40	Prof. Wei Cui Prof. Wei Cui Tsinghua University
Hot Universe Baryon Surveyor

15:30	0:40	Prof. Junjie Mao Prof. Junjie Mao Tsinghua University	DIffuse X-ray Explorer (DIXE) science
DIffuse X-ray Explorer (DIXE) is a proposed high-resolution X-ray spectroscopic sky surveyor on the China Space Station (CSS). The main scientific goal of DIXE is to advance our knowledge on Galactic hot baryons, which is essential for the understanding of the formation and evolution of Milky Way. Diffuse X-ray emission from Galactic hot baryons are best observed in the sky survey mode with a large field of view. DIXE will take advantage of the orbital motion of the CSS to scan a large fraction of the sky. High-resolution X-ray spectroscopy, enabled by superconducting microcalorimeters based on the transition-edge sensor technology, will probe the physical properties (e.g., temperature, density, elemental abundances, kinematics) of the galactic hot baryons. This will complement the high-resolution imaging data obtained with the eROSITA mission.
15:30	0:40	Prof. Junjie Mao Prof. Junjie Mao Tsinghua University
DIffuse X-ray Explorer (DIXE) science

16:10	2:00	Coffee — free format discussion — free afternoon