Welcome to the 7th Workshop on the Operation of Large Vacuum Systems (OLAV-VII) and on the IUVSTA Workshop on UHV/XHV/UCV technologies toward 2030+ (pending approval by IUVSTA).
These joint workshops will be hosted at Kobayashi Hall, KEK (High Energy Accelerator Research Organization) in Tsukuba, Japan, jointly organized by KEK, JAEA (Japan Atomic Energy Agency)/J-PARC, and the JVSS (Japan Society of Vacuum and Surface Science).
OLAV-VII
Following the success of previous editions, OLAV-VII will once again bring together engineers, scientists, and technical experts involved in the design, construction, and operation of large-scale vacuum systems.
OLAV workshops have established themselves as a distinctive platform for sharing practical experience and operational know-how across major research facilities worldwide — from particle accelerators to gravitational-wave observatories and other advanced scientific instruments that demand ultra-high or contamination-free vacuum conditions.
At OLAV-VII, we will continue to explore a broad spectrum of topics, including:
(1) The management of dynamic and radiation-induced vacuum in high-current accelerators,
(2) Integration of vacuum systems with cryogenics, controls, and diagnostics,
(3) Particulate contamination mitigation for SRF and optical systems,
(4) Material and surface behavior under extreme environments, and
(5) Quality assurance, sustainability, and energy efficiency in large vacuum infrastructures.
The workshop format emphasizes the exchange of practical insights through oral presentations and in-depth discussions. Sessions will feature case studies, reports on operational experiences, and lessons learned from both successful implementations and unexpected failures. Participants are encouraged to share current challenges, propose innovative solutions, and discuss ongoing collaborative initiatives.
In addition, OLAV-VII will host updates from major international laboratories and projects, providing an opportunity to connect experts across institutions and disciplines, and to shape the future of large vacuum system operations together.
UHV/XHV/UCV technologies toward 2030+
Ultra-high vacuum (UHV), extreme high vacuum (XHV), and ultra-clean vacuum (UCV) technologies are becoming increasingly vital for the advancement of accelerators, fusion devices, semiconductor manufacturing, surface analysis, and emerging quantum technologies.
This workshop integrates three tightly connected themes that together outline the future of vacuum science toward 2030 and beyond:
(1) Next‑generation materials, surface treatments, and devices that enable ultra‑low outgassing and advanced diagnostics,
(2) Large‑scale UHV/XHV/UCV systems for accelerators, fusion reactors, neutron sources, and gravitational‑wave observatories, where these technologies must operate reliably across vast and complex infrastructures,
(3) Quantum applications and NEG‑based solutions, where optical lattice clocks, cold‑atom standards, and quantum sensors push vacuum requirements to unprecedented levels while sustainable getter technologies become indispensable.
By linking these perspectives, the workshop aims to define a coherent roadmap for next‑generation vacuum science, bridging fundamental research, industrial innovation, and international metrology as we look toward 2030+.
Join us at KEK, Tsukuba, for the 7th Workshop on the Operation of Large Vacuum Systems (OLAV-VII) and the IUVSTA Workshop on UHV/XHV/UCV technologies toward 2030+ in September 2027 — a forum to exchange knowledge, strengthen collaboration, and advance the science and technology of vacuum engineering on a global scale.
