Conveners
Other Geodetic and Survey Topics
- Dominique Missiaen (CERN)
Other Geodetic and Survey Topics
- Helene Mainaud Durand (CERN)
Other Geodetic and Survey Topics
- Georg Gassner (SLAC National Accelerator Laboratory)
Other Geodetic and Survey Topics
- James Volk (ProNovasolutions)
Other Geodetic and Survey Topics
- Hiroaki Kimura (RIKEN Harima Institute)
Dr
Babatunde O’Sheg Oshinowo
(Fermi National Accelerator Laboratory)
10/9/18, 1:30 PM
Other Geodetic and Survey Topics
The ICARUS neutrino detector, which measures 20 meters long and weighs 760 tons, serves as the Short-Baseline Program Far Detector. It consists of two cryostats, ICARUS1 and ICARUS2. Each cryostat holds liquid argon time projection chamber modules and photodetectors. ICARUS1 and ICARUS2, also known as Cold Vessels, are installed in a Warm Vessel inside the Short-Baseline Neutrino Far Detector...
Dr
Mika Masuzawa
(KEK)
10/9/18, 2:00 PM
Other Geodetic and Survey Topics
Paper
The KEKB accelerator is being upgraded to SuperKEKB, using the same tunnel as KEKB.
The upgrade is based on the “Nano-Beam” scheme, wherein the beam size is reduced to 50 nanometers in the vertical direction and 10 microns in the horizontal direction at the interaction point (IP).
Vibration in the tunnel, especially at the IP, could be a critical issue that may result in luminosity...
Na Ma
(Institute of high energy physics, Chinese academy of sciences)
10/11/18, 1:30 PM
Other Geodetic and Survey Topics
Abstract: Since the accuracy of centering leveling and instrument height measurement is poor when the permanent point of device area in tunnel of the Chinese spallation neutron source (CSNS) being observing in the conventional GPS tripod observation mode, a high precision measurement scheme is proposed. In the scheme, the fine-tuned roof bracket and the hemisphere plumbing mirror are designed...
Dr
Helene Mainaud Durand
(CERN)
10/11/18, 2:00 PM
Other Geodetic and Survey Topics
In the frame of the High Luminosity LHC (HL-LHC) project, we propose a novel method to monitor the position of accelerators components inside their cryostat, based on Frequency Scanning Interferometry (FSI). We achieve such a result by installing retroreflective measurement targets on the internal cold components and by using specialized feedthroughs or viewports for the FSI laser beam...
Ms
Hongyan zhu
(IHEP)
10/11/18, 2:30 PM
Other Geodetic and Survey Topics
Paper
Circular Electron Positron Collider (CEPC) will be a very huge accelerator, current alignment methods can not significantly increase efficiency when it still demands the same precision requirement. So we introduced photogrammetry into accelerator tunnel measurement, because of its high efficiency. But accelerator tunnel which is a long and narrow space with few targets is very different form...
Mr
Dominique Missiaen
(CERN)
10/11/18, 3:30 PM
Other Geodetic and Survey Topics
Manual offset measurements with respect to stretched wires are used since decades for accelerator alignments at CERN, e.g. for the SPS and the LHC. A measurement system based on photogrammetry offers appreciated possibilities of automation in comparison to the manual method used so far for the radial offset measurement. Such a system built with pre-calibrated cameras is under development for...
Mr
Jean-Frederis FUCHS
(CERN)
10/11/18, 4:00 PM
Other Geodetic and Survey Topics
The High Luminosity LHC (HL-LHC) is an upgrade of the LHC accelerator to achieve instantaneous luminosities a factor of five larger than the LHC nominal value This challenging project requires the installation of new high-technology components along more than 200 m of the current machine on each side of Interaction Point 1 (ATLAS) and Interaction Point 5 (CMS).
The radiation level will...
Dr
Helene Mainaud Durand
(CERN)
10/11/18, 4:30 PM
Other Geodetic and Survey Topics
Paper
The High Luminosity LHC (HL-LHC) is an upgrade of the LHC to achieve instantaneous luminosities of a factor five larger than the nominal LHC values. The project will comprise the replacement of 1.2 km of accelerator components such as magnets, collimators and radiofrequency cavities in 2024. The upgrade relies on a number of key innovative technologies. The alignment solutions chosen to answer...
Ming Ke
(BNL)
10/12/18, 8:30 AM
Other Geodetic and Survey Topics
The Cornell-BNL Energy Recovery Linac (ERL) Test Accelerator (CBETA) is a prototype for the future Electron Ion Collider (EIC) to prove the principle of accelerating electrons with energy recovery. There will be more than 200 magnets to be installed. Currently the major survey work is the fiducialization of magnets. The fiducials, measurement method, instrument and frame definition will be...
Mr
Tsechuan Tseng
(NSRRC)
10/12/18, 9:00 AM
Other Geodetic and Survey Topics
The vibration wire method for magnets centering alignment is restudied at NSRRC. It is prepared for the replacement of magnets on a girder at TPS in case of out of order. The good resolution data as NSLS II had shown is admired and expected. Moreover, due to the quick decay of the laser PSD system between straight section girders, the wire method to replace the laser PSD system is also studied...
Mr
Qiankun Guo
(Tsinghua University)
10/12/18, 9:30 AM
Other Geodetic and Survey Topics
The Compact Pulsed Hadron Source (CPHS) at Tsinghua University is one multi-purpose pulsed neutron source. The linac of the CPHS mainly consists of a proton source, a low energy beam transport line (LEBT), a radio frequency quadrupole (RFQ) and a drift tube linac (DTL). DTL is positioned downstream the RFQ accelerator and accelerates the beam from 3 MeV to 13 MeV with the peak current of 50...
Dr
Angelika Lippitsch
(Hexagon Manufacturing Intelligence)
10/12/18, 10:30 AM
Other Geodetic and Survey Topics
Leica Laser Trackers provided by Hexagon have a long-standing relationship with alignment groups of several particle accelerator facilities.
In recent years customers requested information about possibilities and limitations of operating laser trackers in special environments, exposing the instruments to magnetic fields.
At Hexagon we have followed up this new interest and investigated...
Mr
Matthias Saure
(Leica Geosystems AG)
10/12/18, 11:00 AM
Other Geodetic and Survey Topics
Author:
Matthias Saure
Address:
Hexagon Manufacturing Intelligence
Leica Geosystems AG
Metrology Products
Moenchmattweg 5
CH-5035 Unterentfelden
Switzerland
Three major standards have been published defining an acceptance and verification test procedure for Laser Trackers.
• ASME B89.4.19
• VDI/VDE 2617-10
• ISO 10360-10
However, these standards have not reached...