Mr
Weihu Zhou
(Academy of Opto-electronics, Chinese Academy of Sciences)
, Ms
Zili Zhang
(Academy of Opto-electronics, Chinese Academy of Sciences)
Laser trackers are widely used in large-scale measurement such as accelerator alignment, aerocraft assembly and ship building. The mechanical and optical structure errors in laser trackers such as mirror tilt and offset introduce systematic errors which have essential influence on the measurement accuracy. In this paper a method for measuring mirror-tilt error of the laser tracker was...
Mr
Vasileios Velonas
(GSI Helmholtz Center for Heavy Ion Research)
The preparatory work for the construction of FAIR, the International Facility for Antiprotons and Ion Research, located next to GSI Helmholtz Center in Darmstadt/Germany, is in good progress. Thus the erection of the building shell for the facility can begin as scheduled in 2015. Meanwhile all of the approximately 1400 65m-long drilled concrete piles for stabilization the substructure and for...
Mr
WEI-YANG Lai
(National Synchrotron Radiation Research Center)
After the construction of Taiwan Photon Source (TPS) was finished, the variation of the survey fiducials was stable. However, the following precise alignment work is influenced by the change of temperature critically. In this paper, we will describe the whole process of alignment work in the TPS storage ring with the relation of the survey network and the temperature of the environment. We...
Ms
Supawan Srichan
(Synchrotron Light Research Institute)
The two insertion devices, a 6.5 T superconducting wavelength shifter and a 2.4 T multipole wiggler, have been successfully installed at Siam Photon Source, a synchrotron light source operated by Synchrotron Light Research Institute, in Thailand. The insertion device installation has been done during machine shutdown period in August 2013. In order to install quickly and efficiently, the...
Dr
Francesco Scantamburlo
(IFMIF/EVEDA Project Team)
IFMIF, presently in its Engineering Validation and Engineering Design Activities (EVEDA) phase, aims at running a 9 MeV / 125 mA / CW deuteron accelerator in Rokkasho (Japan) to validate IFMIF’s 40 MeV / 125 mA / CW accelerator with components mainly designed and constructed in European labs. Beam dynamics calculations demand accuracies and precisions of alignment for certain components within...
Jaromir Penicka
(Argonne National Laboratory)
The Advanced Photon Source (APS) at Argonne National Laboratory is a 7GeV third generation light source providing X-ray beams for research to scientific community since 1995. In order to remain the leading synchrotron radiation source in the western hemisphere, and to provide users with higher photon fluxes at higher photon energies, the APS decided to develop and build series of...
Mr
Lan Dong
(Institute of High Energy Physics)
The article will introduct the surface network survey,tunnel network survey,elements fiducialization,adjustment calculation,and so on about CSNS.
Mr
William Hoffman
(Diamond Light Source Ltd)
The longest beamline(I13) at Diamond was completed in July 2010. At 250m from the Storage Ring establishing a survey control network proved challenging. A TDA5005 was used to measure the 3D network. Currently a second long beamline (I14) is being constructed. It is envisaged that we use the AT401 to measure and establish the network for I14. This paper will look at a simulation of the...
Mr
Rodrigo Junqueira Leão
(Centro Nacional de Pesquisa em Energia e Materiais - CNPEM / Laboratório Nacional de Luz Síncrotron - LNLS)
The new Brazilian Light Source, Sirius, will be commissioned in 2018 and is considered by many as a fourth generation Synchrotron facility project. The Survey and Alignment activities are currently in the planning phase and one of the focus is the target holders development. Those target holders will be installed in our accelerator to serve as a network of reference points to be used in the...
Mrs
Na MA
(Division of Accelerator Technology, Dongguan Campus,Institute of High Energy Physics(IHEP), Chinese Academy of Sciences(CAS).)
Because space distance of ground control network in spallation neutron source is large and requirements of absolute precision are strict, the traditional measurement is difficult to meet the requirements of measurement. In view of this, GPS is adopted to solve the problem, which is not limited to intervisibility and of high accuracy. Through alignment experiment in "standard detection field”,...
Mr
Georg Gassner
(SLAC National Accelerator Laboratory)
In some cases traditional autocollimation techniques cannot be used for surface alignment, either due to the surface not being reflective enough, or being curved, or the line-of-sight normal to the surface not being accessible.
This paper provides examples on how we are using a laser and a CCD camera to map the location and orientation of various surfaces.
Ms
Gao Ting
(Changcheng Institute of Metrology & Measurement)
With laser Tracker widely used in industrial measurement field，More attention is concentrated on how to calibrate a laser tracker in standard environment laboratory. In this paper, a new device which could be applied to calibrate a laser tracker is introduced. The device employs a laser interferometer as the standard and gives the reference lengths in horizontal and vertical direction by two...
Mr
Horst Friedsam
(Fermi National Laboartory)
Fermilab is transitioning from the collider era to a dedicated international neutrino and muon facility in accordance with the recent US P5 recommendations. While the long baseline neutrino facility (LBNF) is currently in the conceptual design phase, the muon program is ramping up rapidly. This presentation focuses on the g-2 project to be constructed over the next two years. Physicists plan...
C. Zhang
(Japan Synchrotron Radiation Research Institute)
SPring-8 storage ring have critical alignment tolerances, especially for the magnets on common girders. We have been using the laser CCD-camera device for its alignment work. In renew this alignment device, we proposed an iris diaphragm laser alignment system, and illustrated at last workshop of IWAA2012. Recently, the development of this system was completed and performances of it were...
Dr
Tsuyoshi Suwada
(Accelerator Laboratory, KEK, High Energy Accelerator Research Organization)
The initial realignment of the long beam line is in progress at the KEKB injector linac due to the big earthquake struck in Japan in March 2011 and also towards the Super KEK B-factory project. The injector linac is a 600-m-long linear accelerator that will directly inject electron and positron beams into the Super KEKB rings under construction. The injector linac comprises eight sectors (A–C...
Mr
Hao Guo
(Shanghai Institute of Applied Physics,Chinese Academy of Sciences)
Annually realignment was initiated in August this year. With the combination of Laser Tracker and digital level, all the monuments and fiducials on the magnets in the Storage Ring had been measured. By the Spatial Analyzer(SA) software, the collecting data adjustment had been accomplished. The deviations between the actual positions and the theoretical ones of Quadrupoles were obtained. And...
Ms
Lei WU
(Institute of High Energy Physics, Chinese Academy of Sciences)
HEPS(High Energy Photon Source) is a proposed 5GeV third generation light source with 50pm emittance at IHEP.The alignment tolerance for a string of quadrupoles and sextupoles on a 5.4 meters girder is 30 micrometers. To achieve the high precision requirements, the vibrating wire alignment technique will be used to align several magnets installed on the long girder. The method is based on...
Ms
Jing Liang
(Division of Accelerator Technology, Dongguan Campus,Institute of High Energy Physics(IHEP), Chinese Academy of Sciences(CAS).)
A laser tracker accuracy test experiment is introduced in this paper.uing laser interferometer, we tested the laser tracker accuracy in the horizontal,longitudinal and vertical direction. And then statistics of laser tracker Precision in BEPCII storage ring from 2007-2010 is shown. According the statistics, actual distance precision and angle precision are given to calculate mean square error...
Mr
Jiaxin Chen
(Institute of High Energy Physics (IHEP))
China Spallation Neutron Source(CSNS) use the diamond like carbon foils（DLC） in the stripping foil system. The foil's thickness is between 100μg/cm2 and 200μg/cm2. With the characteristics of brittle, thin and opaque of the CSNS foils, it is very difficult to measure the thickness. The thickness of the foil has an important effect on the stripping efficient and beam losses. This paper focuses...
Mr
William Jansma
(Argonne National Laboratory)
GRETINA is a ¼ scale diminutive version of the proposed Gamma-Ray Energy Tracking Array (GRETA). This new type of gamma-ray detector is designed to study the structure and properties of atomic nuclei. It uses large crystals of hyper-pure germanium and is the first detector to use the concept of gamma-ray energy tracking.1 In August 2013 the GRETINA detector was delivered to the Argonne Tandem...
Mr
Georg Gassner
(SLAC National Accelerator Laboratory)
This poster gives an overview of the alignment engineering projects at SLAC
Dr
Chenghao Yu
(Brookhaven National Laboratory)
Smoothing is a technique to achieve accurate relative alignment of components and it’s a main concern of accelerator alignment. Several smoothing techniques are reviewed in this article and the principle and application of smoothing based on best-fit transformation are introduced as there is no other paper discussing this before.
Compared with other methods, smoothing based on best-fit...
Mr
Guozhu Cai
(IMP.CAS)
, Mr
Wenjun Chen
(IMP.CAS)
This article mainly described a method of measured the Heavy Ion Medical Machine in WuWei .We have installed and aligned most magnets of Heavy Ion Medical Machine by laser tracker and its fitting software SA. we set up a global Fram to determine the theoretical position of origin of each subsystem for whole Medical Machine . A local Frame which based on theoretical origin was set up for each...
Mr
Fan Yang
(School of Navigation & Aerospace Engineering, Information Engineering University)
Position and posture measurements of large facility are necessary works in many fields, but the old one-dimensional measuring technology is no longer to meet the growing requirement of measuring accuracy, range and speed, so new measuring technology and method should be study. Point accuracy of micrometer can be realized by single station of Laser Tracker in small range, but it is necessary to...
Mr
Zhiyong KE
(Dongguan Neutron Science Center)
In CSNS, the DTL(Drift Tube Linac) is part of the Linac accelerator which accelerates H- ion from 3 MeV to 80 MeV, and it is proposed a high alignment tolerance requirement which is both 0.05mm in the transverse and vertical direction and 0.10mm in the longitudinal direction, the challenge work is proceeded optically and mechanically by an established method with a laser tracker system, and...
Prof.
Xiaoye He
(Natiobal Synchrotron Radiation Laboratory, University of Sciense and Technology of China)
To ensure the high accuracy requirement of alignment and installation of HLSⅡ, the high accuracy control network is necessary. The primary control network provides high accuracy reference to local control network. After optimization design that using Monte-Carlo method, according to the structure characteristic of HLSⅡ, the primary control network is measured by several different instruments,...
Dr
Chenghao Yu
(Brookhaven National Laboratory)
NSLS-II requires ±100 micron alignment precision to adjacent girders which is mainly depending on the precision of survey control network. The design is determined to establish a laser tracker and digital level based control network, but it was changed to be measured by AT401 only later.
Simulation shows that an estimated accuracy of ~50 micron can be achieved. The analysis of actual...
