Back in 2014 Exact Metrology worked with Horst Friedsam, Alignment & Metrology Department Head at the Fermi National Accelerator Laboratory in Batavia, Illinois, on a project known by its location as "Main Injector Ring Section MI-10"--involving 3D mapping of existing equipment in order to yield data supporting placement and installation of an additional beam transport line.
Fermilab is America’s premier high-energy particle accelerator laboratory—collaborating with scientists from around the world to:
1) Perform pioneering research;
2) Operate world-leading particle accelerators and experiments;
3) Develop technologies for science supporting US Industry.
Left: Photo showing Blue and Red Magnets inside Fermilab’s Main Injector.
Right: 3D Map which will help Fermilab install a new beam transport line.
It took three Exact Metrology professionals an entire week to complete this work which took place in section 10 of the Main Injector Accelerator—situated in a tunnel about 10 m below ground and with a circumference of approximately two miles. The Main Injector ramps up a proton particle beam arriving from the 8 GeV [Giga-electron-Volts] Booster to 120 GeV that are smashed into a stationary target to ultimately generate the world’s highest intensity neutrino beams.
Recently Fermi Accelerator Laboratory has been working on a new Deep Underground Neutrino Project or DUNE to provide a neutrino beam to the Homestake Mine at South Dakota featuring access to research facilities about 2 miles below ground ideal for neutrino experiments requiring shielding from cosmic ray events. In order to deliver a neutrino beam to that location a new beam transport line is required that fits within the existing beam line infrastructure. For that reason a large section of the Main Injector installed equipment needed to be scanned. The data will be important for the design of new beam elements and visualizing interferences with existing components.
The Alignment and Metrology group maintains a high precision control network throughout the laboratory complex. In the scanning process special laser scanner targets modified to fit with the existing control network points were utilized. RSL300 laser scanner target markers from Berntsen Int. Inc. were mounted concentric to 1.5" radius steel half spheres interfacing with our laser tracker nests. The coordinates of the control network, determined at the millimeter level, were provided to Exact Metrology to globally register all scans relative to Fermilab’s system. The end product thus provides information for all scanned objects in the common coordinate system used for the entire Fermilab site.
A Leica ScanStation P20, an ultra-high speed 3D Scanner, was used for its combination of high accuracy and low scan noise plus its industry-leading environmental specifications for industrial as-built documentation.
The scope of the project included data scanning, full CAD modelling and photo overlays. The software chosen to aid the process was Leica Cyclone producing TruView—a web-enabled panoramic point viewer allowing the user to view, pan, zoom, measure and mark up point cloud data over the web.
[Download your FREE copy of Leica TruView]
Fermilab has a long-existing relationship with Exact Metrology, having purchased equipment through us, renting equipment from our instrument pool, and contracting metrology services for on-site work such as this scan.