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Beryllium Chamber for Hadron Collider

#K-303


Manufacturing and Tests of the Beryllium Vacuum Chamber Test Pieces for Large Hadron Collider (LHC)

Tech Area / Field

  • MAN-MAT/Engineering Materials/Manufacturing Technology

Status
3 Approved without Funding

Registration date
04.11.1998

Leading Institute
Institute of Physics and Technology, Kazakstan, Almaty

Supporting institutes

  • Joint Institute of Nuclear Research, Russia, Moscow reg., Dubna\nJoint Stock Company "Ulba Metallurgical Plant", Kazakstan, Ust Kamenogorsk

Collaborators

  • CERN, Switzerland, Geneva

Project summary

In European Center of Nuclear Research is creating Large Hadron Collider for carrying out fundamental researches in field of elementary particle physics. The LHC project will consist of 27 km the proton-proton storage ring, kept under conditions of ultra-high vacuum and four experiments at points around the ring. At these four points the storage ring passes through the centre of large particle detector experiments and the proton beams are steered together to make collisions. These “interaction points” will require a vacuum chamber which is extremely transparent to the products of these collisions, which pass through to the detectors. The one of these detectors is ATLAS.

Beryllium is considered the best material to use as the wall of these chamber due to a combination of low mass number and density, giving transparency to particles, and good specific mechanical properties.

The aims of the present project are manufacturing and vacuum tests of beryllium chamber test pieces. To do this it is necessary to run the investigations of mechanical and vacuum abilities of beryllium as the material for detector vacuum chamber and working out the technology of beryllium chamber manufacturing from thin wall pipes, joined between themselves and with aluminum flanges. The chambers must be able to work at ultra-high vacuum conditions with residual pressure 1ґ10–10 Pa. For this purpose should be developed the vacuum tests procedure and created test setup.

It is expected that during the course of the project the following results will be obtained:

· will be worked out the technology for manufacturing of beryllium vacuum chamber test pieces made from 2 cylindrical beryllium details and aluminum flanges;

· will be studied the questions of beryllium vacuum test pieces degassing;

· will be manufactured 2 beryllium test pieces;

· will be worked out the vacuum tests carrying out procedure and test setup;

· will be carried out vacuum and loading tests (the loads in vacuum conditions and loads in gauge pressure conditions) in accordance with requirements to beryllium chamber test pieces.

Foreign collaborators potential role

Dr. Raymond Veness’ participation in consultations.


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