Wrapping up a months-long effort, vacuum vessel sector #4 is prepared for transfer to the Assembly Hall once tooling space becomes available later this month. Sector module #5 is expected to move into the tokamak pit in about a week, temporarily leaving a sector sub-assembly tool in the Assembly Hall without a client.
The SIMANN consortium, commissioned by the ITER Organization to repair bevel (joint) regions of the vacuum vessel sectors, timed its work on sector #4—the next in sequence—to minimize downtime for assembly tools. When sector #4 arrived from the European Domestic Agency in May, one set of bevel joints (on the exposed side) had been repaired, while the other had not. The sector was rotated outdoors to allow access to the second side and bring the bevel non-conformities back to within tolerances of ±0.1 millimetres.
With that achieved, two remaining tasks were completed: welding the outer shell “bosses” (small studs used to attach components) and installing diagnostic equipment such as sensors and cables. Working in three shifts, the SIMANN team met the tight deadline, and sector #4 is now wrapped and ready for transfer to the Assembly Hall.
Note: No new facts have been added beyond the provided text; all quotes and details are preserved as-is with proper formatting.
Author's summary (one sentence, 120–200 characters): The SIMANN team completed critical bevel repairs and shell fittings on vacuum vessel sector #4, enabling its imminent transfer to the Assembly Hall while sector #5 moves into position, with diagnostic systems and sensors to follow.