Engineering

Metal Technology Co. Ltd.’s Engineering Division is responsible for the design phase. Based on the customer’s requirements, the engineer designs and verifies the validity of the design through FEM analysis, mock-up tests, etc. in order to complete the design ready for manufacturing. After that, MTC completes the manufacturing of the product by making full use of various manufacturing technologies (material selection, machining, heat treatment / surface treatment, bonding, etc.) tailored to the needs of the design.

【Achievements】
Metal Technology Co. Ltd.’s Engineering Division has been an integral part in the development and installation of critical parts for Japan’s nuclear research institutes with regards to particle acceleration. MTC is also a key player in the development of nuclear fusion technology. This includes neutron experiments at the Japan Proton Accelerator Research Complex (J-PARC), the world's largest fusion experiment, the ITER project, and experience manufacturing equipment used for the XMASS experiment for university funded research.

Product name: Collision point (interaction region) beam pipe for SuperKEKB

The beam pipe is a vacuum chamber with a complicated structure that is used as part of the SuperKEKB, a gigantic accelerator leading the physics experiments in elementary particles in Japan. The SuperKEKB is a colliding-beam accelerator and the beam pipe manufactured by MTC is installed at the most important section of it, (add: the interaction region (IR)) where electrons and positrons collide frontally.

The center of the beam pipe is made of thin-walled beryllium, allowing the new particles to permeate unobstructed, because of its low atomic number. It has a double structure for cooling, with the cooling medium flowing between the walls. On both sides of the pipe, Tantalum that has a high atomic number is used to shield against particles (noise) incoming from other parts of the SuperKEKB to prevent them from entering the detector. Electrons and positrons intersect at a low angle and to allow them to cross the interaction region at that vector, the pipe splits in two on both ends.

Product name: Millimeter wave wide-band polarizer for ECH (electron cyclotron resonance heating)

Metal Technology Co. Ltd. has conducted collaborative research with members of the Quantum Science and Technology Research and Development Organization (QST), and Ibaraki University (Saegusa Laboratory) on the ECH (electron cyclotron resonance heating) of the superconducting tokamak plasma nuclear fusion experiment device “JT-60SA”. We have developed a high power wide-band polarizer compatible at millimeter wave of megawatts level. The wide-band polarizer for millimeter waves successfully developed this time can transmit, with high efficiency, high power millimeter waves (frequency: 110 GHz, 138 GHz) for heating plasma.

The polarizer, through its metal mirror which is equipped with a rotatable reflective diffraction grating, can produce arbitrary polarized waves which can enter the plasma. Through continued collaborative research the heat loss was reduced to 50% or less, the size was reduced by about 4 kg, and the cooling efficiency was improved in comparison to the prototype type.

Name of product:PMT holder for XMASS experiment

This is an oxygen-free copper holder supporting 642 photomultiplier tubes for XMASS experiment we manufactured and delivered to the Institute for cosmic ray research, University of Tokyo. We took charge of the design, production, and assembly of this equipment. This experiment and the institute were written in the an article published in the Newton magazine (May, 2010). We used oxygen-free copper material and completed the construction in 90 days after melting in order to prevent activation from cosmic rays.