Metal Technology Co. Ltd.




Horizontal collimator (movable mask)

Horizontal collimator (movable mask)

Product details

The collimator (movable mask) is part of the SuperKEKB, a large scale accelerator of the electron-positron collider-type (large scale electron-positron collider-accelerator). The collimator is a device to narrow the halo close to the beam trajectory and to suppress backgrounds in the particle detector (Belle-II). It also has the purpose to protect the various accelerator components from the orbiting beam. The left-right matched mask head built in this product moves with high precision horizontally in an area of 5~25mm from the shaft axis and allows to collimate the beam.

Production details

The body of the collimator is made of oxygen-free copper and the inner diameter of the part the beam passes narrows fromΦ90mm→Φ27mm(center)and widens again to→Φ90mm. It has been mainly built by vacuum brazing, bonding various parts in a complicated arrangement that allows to keep the internal ultrahigh vacuum. The mask head in the center of the collimator has been built using MTC’s core technology, HIP bonding, as a single structure, combining tungsten and a part made of oxygen-free copper that serves as a cooling mechanism to allow intelligent cooling of the mask head with high thermal load.

Engineering Division

Horizontal collimator (movable mask)

Recommended articles

Compact electron beam irradiation device

Contact Us



Any request about products, and ask for quotation can be made here. Other questions and requests about the company can also be made here.

Document download

  • Company information
  • Technology information (Japanese)
  • Technology information (English)
  • HIP unit list
  • Hot press equipment list
  • Possible material combinations for brazing
  • MICROTRON Test Machine MIC1
Go to page top
Go to page top