Shanghai Synchrotron Radiation Facility

The Shanghai Synchrotron Radiation Facility (SSRF) is national scientific infrastructure — an accelerator complex where an electron beam is bent into a ring by magnets and the resulting X-ray light is delivered to dozens of beamlines where researchers study materials, biology, chemistry and medicine at the atomic scale. The size of the instrument is the size of a building: the storage ring hall is a ring of labs and experimental hutches, and the building that encloses it is part of the experiment, not just protection for it.

Hanart's envelope scope on this facility had to satisfy a category of client requirement almost unknown in commercial work: the facade itself must not disturb the experiment. Thermal drift, air infiltration, condensation, dust and vibration all enter a synchrotron's error budget, and every gram of moisture or degree of drift has the potential to show up as noise in beamline data. The curtain wall and enclosure systems were therefore engineered to a stability and sealing standard defined by the accelerator's requirements — the practical meaning of building for precision.

The result was recognized twice over. The facility earned the Luban Prize in 2009, and it was named among the "100 Classic Engineering Projects of the 60th Anniversary of the People's Republic of China" — a national honor that places technical and construction excellence on the same plane as the country's foundational infrastructure. For Hanart, SSRF is the flagship proof of the Luban landmark record: not a decorative tower or a stadium spectacle, but a building where the envelope's invisible correctness is the entire point.

The brief for the enclosure was that the building should not disturb the beam. The design team therefore put thermal stability first: insulating and lining build-ups were detailed so the magnetic ring and optical floors sat in a stable thermal environment, thermal bridges were simulated at every roof, plant-room and penetration junction, and expansion was resolved through controlled movement lines rather than continuous force transfer. The same discipline governed solar exposure — shading and glazing placements were reviewed against the drift budget of the experimental floors so the facade was a stable boundary, not a varying heat source.

Air, dust and moisture control were designed as part of the enclosure system, not as site afterthoughts. The curtain wall and closure systems were selected for predictable, low-maintenance behaviour and detailed with sealed interfaces at plant rooms, roof edges and the many service penetrations a research facility demands; gaskets and seals were specified with movement capacity matched to the structure’s behaviour, and drainage paths were engineered so water was removed without compromising the air line.

Verification started early: a performance mock-up tested for air and water resistance to the relevant national standards, with the results carried into production QC. Detailing was staged so that the highest-risk interfaces — the junctions between curtain wall, roof and plant decks — were reviewed and tested before site installation, and every fix point was checked against the thermal-bridge simulation to keep the envelope continuous where the science depended on it.

The closure strategy combined curtain wall and enclosure systems selected for their stability and controllability rather than their drama. The curtain wall delivers the facility's daylight interface where researchers and staff meet the ring building, with glazing and solar control engineered to the facility's thermal budget. The technical volumes — storage ring hall, experimental hall, equipment rooms — received enclosure treatments matched to their functions: controlled-access walls with minimal openings, insulation and air-tightness performance commensurate with precision environments, and detailing that keeps the weather barrier continuous across the boundaries between experimental areas, machine areas and support spaces.

Interface engineering carried the design: the curtain wall had to meet roofs, plant rooms and the facility's many penetration zones without compromising air-tightness or letting thermal bridges short-circuit the insulation. Drainage was engineered as part of the precision boundary — controlled, predictable paths with no possibility of backflow into sensitive volumes. Throughout, the fabrication and installation regime followed the same logic: components manufactured and inspected to a documented standard, installed by crews verified on the systems, and the completed envelope checked against the performance targets that the instrument dictated.

The delivered facility stands as national research infrastructure and as a double award-winner: the 2009 Luban Prize and a place among the 100 Classic Engineering Projects of the PRC's 60th anniversary. For clients building laboratories, R&D campuses, clean-production or precision environments, SSRF is the reference that says voice is not the point — engineering is. Comparable facilities today can be explored through the full landmark series, or discussed directly with the team.