Author
J-C. Godot
Bio: J-C. Godot is an academic researcher. The author has contributed to research in topics: Vacuum engineering. The author has an hindex of 1, co-authored 1 publications receiving 6 citations.
Topics: Vacuum engineering
Papers
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CERN1
TL;DR: The use of modern materials and specialized forming techniques have enabled the ISR Division at CERN to produce very transparent interaction area vacuum chambers as discussed by the authors, and the design and fabrication methods used to conceive and form these chambers are described.
Abstract: The use of modern materials and specialized forming techniques have enabled the ISR Division at CERN to produce very transparent interaction area vacuum chambers. The design and fabrication methods used to conceive and form these chambers are described. Special reference is made to the titanium chamber in intersection 7, the inconel chamber in intersection 8, and the stainless steel chamber in intersection 4. A method is given for rationalising the choice of material for interaction area vacuum chambers for any colliding beam machine.
6 citations
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01 Apr 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this paper, a new type of vacuum jacket, fabricated from plastic honeycomb core and Mylar skins, has been used in the target system for more than 5000 hours and measured the average radiation thickness and the average density of this jacket are measured to be 3.3 × 10 −3 X 0 and 0.15 g/cm 3, respectively.
Abstract: Cryogenic targets (H 2 , D 2 and 4 He) have been built for use in the study of photonuclear reactions with a π sr spectrometer, TAGX, at the 1.3 GeV Tokyo electron synchrotron. A new type of vacuum jacket, fabricated from plastic honeycomb core and Mylar skins, has been used in the target system for more than 5000 hours. The average radiation thickness and the average density of this jacket are measured to be 3.3 × 10 −3 X 0 and 0.15 g/cm 3 , respectively.
8 citations
CERN1
TL;DR: The CERN Intersecting Storage Rings (ISR) as mentioned in this paper was the first facility ever built providing colliding hadron beams and it mainly operated with protons with beam energies of 15 to 31 GeV. The ISR was conceived in the years 1960 to 1964 and was approved in 1965.
Abstract: The CERN Intersecting Storage Rings (ISR) was the first facility ever built providing colliding hadron beams. It mainly operated with protons with beam energies of 15 to 31 GeV. The ISR was conceived in the years 1960 to 1964 and was approved in 1965. It came into operation at the beginning of 1971 and was decommissioned as a collider in 1983. A number of accelerator technologies have been either much improved or developed at the ISR which subsequently have become enabling technologies for a number of hadron storage rings and large colliders. Prominent examples of such technologies are ultra-high vacuum technology, beam diagnostics based on Schottky signals and stochastic cooling. The experiences obtained with the ISR were later exploited at the proton-antiproton facility in the CERN SPS, the Tevatron at Fermilab, the RHIC at Brookhaven and, finally, by the LHC at CERN.
8 citations
01 Jan 2011
TL;DR: In this paper, the requirements for experimental vacuum chambers are reviewed and the new beryllium technology adopted for the LHC and experience gained in the manufacture and installation is described.
Abstract: Beryllium is the material of choice for the beam vacuum chambers around collision points in particle colliders due to a combination of transparency to particles, high specific stiffness and compatibility with ultra-high vacuum. New requirements for these chambers in the LHC experiments have driven the development of new methods for the manufacture of beryllium chambers. This paper reviews the requirements for experimental vacuum chambers. It describes the new beryllium technology adopted for the LHC and experience gained in the manufacture and installation.
3 citations
11 Nov 2013
TL;DR: The CERN Intersecting Storage Rings (ISR) as mentioned in this paper was the first facility providing colliding hadron beams and operated mainly with protons with a beam energy of 15 to 31 GeV.
Abstract: Summary The CERN Intersecting Storage Rings (ISR) was the first facility providing colliding hadron beams. It operated mainly with protons with a beam energy of 15 to 31 GeV. The ISR were approved in 1965 and were commissioned in 1971. This paper summarizes the context in which the ISR emerged, the design and approval phase, the construction and the commissioning. Key parameters of its performance and examples of how the ISR advanced accelerator technology and physics are given.
2 citations
CERN1
TL;DR: In this paper, the emergence of the ISR project at CERN is described in the light of the situation at Cern at the end of the 1950s when the CERN Proton Synchrotron (PS) was still under construction.
Abstract: The emergence of the ISR project at CERN is described in the light of the situation at CERN at the end of the 1950s when the CERN Proton Synchrotron (PS) was still under construction. The discussions leading to the project are put into context with world-wide efforts to build larger and more powerful accelerators at that time; the evolution of the project before approval is sketched. The basic design considerations and the most significant technological choices are explained. The construction period is summarized by highlighting important milestones and the performance achieved during commissioning in 1971, the first year of running, is given.
1 citations