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13-17 October 2014
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Home > Contribution List

Contribution List

Displaying 61 contributions out of 61
SACLA is the Spring-8 Angstrom Compact free electron LAser, it was operated from 2011. SPring-8 is located on the very good ground, which is very stable and rigid bedrock. In contrast, the area of SACLA building, whose length is 640m, is not rigid enough. The bedrock area (cutting area) is only 1/5 of the building and 4/5 is located on the overlapping area. The maximum thickness of the embankment ... More
Presented by Dr. Hiroaki KIMURA
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 presented by ... More
Presented by Ms. Zili ZHANG, Mr. Weihu ZHOU
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 analyse ... More
Presented by Mr. WEI-YANG LAI
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 superconducting u ... More
Presented by Jaromir PENICKA
The synchrotron Light Source for Experimental Science and Applications in the Middle East (SESAME) is now in its final stage. This paper presents the methodology and initial results for mechanical alignment of the booster synchrotron for SESAME. SESAME booster is the old BESY 1 Booster and requires special considerations for alignment. This paper also presents the alignment strategy for the storag ... More
Presented by Mr. Taer ABU-HANIYI
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 bear ... More
Presented by Mr. Vasileios VELONAS
In the fall of 2012, a major upgrade to the Duke Free Electron Laser (DFEL) Storage Ring was completed. This work was carried out by installing two additional helical undulators using a Wiggler Switchyard System. This mechanism utilizes a quick changeover between two planar OK-4 undulators and two new helical OK-5 undulators in the middle of the FEL straight section in a relatively short period o ... More
Presented by Mr. Mark EMAMIAN
CLIC (Compact LInear Collider) project will consist of more than 20000 two meters long modules. A test seup made of 3 mocules has been built at CERN to validate the assembly and integration of all components and technical systems in the crowded environment of a module and to validate the short range strategy of pre-alignment. The test setup has been installed in a room equipped with a sophisticate ... More
Presented by Dr. HELENE MAINAUD DURAND
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 pre-align ... More
Presented by Ms. Supawan SRICHAN
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 ... More
Presented by Dr. Francesco SCANTAMBURLO
Jefferson lab has just completed an upgrade to its CEBAF accelerator which allows for an increase in the energy of delivered beam from 6 GeV to 12 GeV. The enhancements to the accelerator have included the addition of 10 new high performance cryomodules, and the removal, upgrade and refurbishment of almost 300 existing transport magnets. Outside of the main accelerator, a new experimental hall has ... More
Presented by Mr. Christopher CURTIS
The update engineering of Hefei Light Source is almost completed and the machine is being commissioned. This paper introduces the survey and alignment jobs that run throughout all the process of the engineering construction. They include establishing the control points of network for survey and alignment just after the building projects, surveying the first-level and second-level of control networ ... More
Presented by Prof. Xiaoye HE
The paper has introduced the special datum in the alignment of particle accelerator, studying and improving the functional model of 3-D adjustment in the large-scale control network, to complete it in Visual C++ language. At last, it’s feasible and meaningful through verifying and analyzing the 3-D adjustment with total-station’s and laser tracker's observations in some accelerator's control n ... More
Presented by Mr. tao LUO
The article will introduct the surface network survey,tunnel network survey,elements fiducialization,adjustment calculation,and so on about CSNS.
Presented by Mr. Lan DONG
CLIC (Compact LInear Collider) Drive Beam Decelerator will generate RF power to accelerate the colliding beams. One key component of the decelerator is the Drive Beam Quadrupole (DBQ). More than 40000 DBQ will have to pre-aligned within a challenging precision and accuracy: the magnetic axis of each DBQ will have to be positioned in a cylinder with a radius of 20 micrometers, over a sliding window ... More
Presented by Dr. HELENE MAINAUD DURAND
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 alignm ... More
Presented by Mr. Rodrigo JUNQUEIRA LEÃO
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 I13 n ... More
Presented by Mr. William HOFFMAN
The CLIC study requires 10 micrometers precision and accuracy over 200m for the pre-alignment of beam related components. A solution based on laser beam as straigth line reference is being studied at CERN. It involves camera/shutter assemblies as micrometric positioning sensors. It includes reference targets on the shutter in order to compute the coordinates of the laser spot centre from camera pl ... More
Presented by Dr. HELENE MAINAUD DURAND
In the frame of the HIE-ISOLDE project, most of the existing ISOLDE REX line will be replaced by a superconducting Linac in order to upgrade the energy and intensity of the REX ISOLDE facility at CERN. This upgrade involves the design, construction, installation and commissioning of 2 low-β and 4 high-β cryomodules. Each high-β -cryomodule houses five high-β superconducting cavities (6 for the ... More
Presented by Mr. Guillaume KAUTZMANN
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”, in ... More
Presented by Mrs. Na MA
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 lin ... More
Presented by Ms. Gao TING
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.
Presented by Mr. Georg GASSNER
The Long Shut-Down 1 (LS1), has been triggered by the repair of the splices in the interconnections of the Large Hadron Collider (LHC) cryo-magnets. The “weakness” of these splices needed to be repaired in order to run the LHC at its ultimate energy of 14TEV to accumulate more luminosity and events to improve the knowledge of the parameters of the Higgs’s boson discovered at CERN in 2012. Th ... More
Presented by Mr. Dominique MISSIAEN
The ALBA synchrotron light facility is a 3GeV storage ring able to work in top up mode which delivers X-Ray beams to seven beamlines, already in operation. One of the seven operating ALBA beamlines is CIRCE (BL24). A soft X-ray beam line that counts with two different end stations, Photoemission Electron Microscopy (PEEM) and Near Ambient Pressure Photoelectron spectroscopy (NAPP). Due to the beam ... More
Presented by Ms. Marta LLONCH
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 to me ... More
Presented by Mr. Horst FRIEDSAM
CLIC (Compact LInear Collider) is a proposed 3 Tev e+/e- linear collider being studied at CERN. One of the main challenges in this study is to preserve the beam emittance growth of both the main linac and the beam delivery system in the vertical plane to below 10 nm. Such tolerances can only be achieved with beam based alignment which requires the pre-alignment of the components to 10 um over a sl ... More
Presented by Dr. helene MAINAUD DURAND
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 examined. ... More
Presented by C. ZHANG
on 17 Oct 2014 at 10:25 AM
The Super Proton Synchrotron is the last machine in the LHC injector chain, just before the injection into the LHC. Operational since 1976 the SPS provides the LHC with a 450GeV beam and is not less demanding in terms of alignment than the LHC. At high energy the alignment is playing an even more critical role for the beam orbit due to the fact that the SPS corrector magnets are designed for only ... More
Presented by Mr. Patrick BESTMANN
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 an ... More
Presented by Dr. Tsuyoshi SUWADA
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 the c ... More
Presented by Mr. Hao GUO
The position of the low beta quadrupoles of the LHC is monitored by Hydrostatic Levelling Systems (HLS) and Wire Positioning Systems (WPS). These magnets are located on each side of the four experimental areas, where the level of residual radiation will increase with the next steps of LHC operation. This will reduce the possibility of future access in these areas more and more. The regular validat ... More
Presented by Dr. HELENE MAINAUD DURAND
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 measurem ... More
Presented by Ms. Lei WU
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 focuse ... More
Presented by Mr. Jiaxin CHEN
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 of u ... More
Presented by Ms. Jing LIANG
This poster gives an overview of the alignment engineering projects at SLAC
Presented by Mr. Georg GASSNER
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 transfo ... More
Presented by Dr. Chenghao YU
SuperKEKB is a next-generation B-factory machine, which aims to achieve a peak luminosity 40 times higher than that of KEKB. It will be built utilizing the existing KEKB tunnel. The SuperKEKB construction started in 2010, and the beam commissioning is scheduled to take place in 2015. Newly fabricated magnets are now being installed in the tunnel, and initial alignment work has begun. Effects of ... More
Presented by Dr. Mika MASUZAWA
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 Lin ... More
Presented by Mr. William JANSMA
The 3GeV ALBA synchrotron light facility has currently seven operational state-of-the-art phase-I beamlines, comprising soft and hard X-rays. Additionally, two phase-II beamlines are in construction. Since as early as 2012, ALBA Synchrotron has been hosting official users; however, the machine independent slab is being surveyed since 2009 (once the whole installation was finished). The ALBA criti ... More
Presented by Ms. Marta LLONCH
The MAX IV project inauguration takes place June 21st 2016. The Linear accelerator is being commissioned. The First beamline at MAX IV, the FemtoMAX beamline is ready. It will use the electrons from the Linac to produce X-rays in the Femtosecond region. The status of the installation work at the rest of the facility is described and the time schedule for installations of beamlines in 2015 is shown ... More
Presented by Mr. Brian Norsk JENSEN
As well as, the Long Shut-Down 1 (LS1), many other projects are still progressing at CERN. The LINAC4, which will be the essential part of the injector chain in the future, is in the installation phase and will be connected to the existing accelerators in 2018. AWAKE, a project to verify the approach of using protons to drive a strong wakefield in a plasma which can then be harnessed to accelerate ... More
Presented by Mr. Dominique MISSIAEN
J-PARC 3GeV RCS suffered from the misalignments of several millimeters of the magnets in both horizontal and vertical directions caused by the Earthquake on March 11, 2011. As the beam loss was acceptable for beam operation at 300kW, the beam operation was implemented without alignment until May, 2013. Realignment of 3GeV RCS was carried out from July to November, 2013 in conjunction with the upgr ... More
Presented by Dr. Norio TANI
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 subsy ... More
Presented by Mr. Wenjun CHEN, Mr. Guozhu CAI
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 measuremen ... More
Presented by Dr. Chenghao YU
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 est ... More
Presented by Mr. Fan YANG
Abstract content The laser trackers of API T3 and Leica AT401 are usually used in the survey network of accelerator. This paper presents the comparison from their technology detail, metrology test in the institute,and surveying in the control network. API T3 owns outstanding performance in distance, and AT401 owns stable performance in angle and fast warm.Moreover,both of them are weak in ... More
Presented by Mr. GUOZHU CAI
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, ... More
Presented by Prof. Xiaoye HE
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 the fi ... More
Presented by Mr. Zhiyong KE
As the key elements of accelerator driven sub critical system (Accelerator driven sub-critical systems-ADS), Cry Module is the emphasis and difficulty of superconducting linac alignment because of its Invisibility and ultra-low temperature characteristics. Collaborative align and monitoring cold mass used by laser tracker and micro alignment telescope ware proposed. Optical cross and its support ... More
Presented by Mr. jiandong YUAN
China is building a world-class spallation neutron source,called CSNS.It's located in Guangdong province, which is in the south of China,and the civil construction is under progress.This paper introduced the surveying scheme of the primary network of CSNS,including the control points distribution and the instruments using,then the LGO software was used for the processing of the GPS observations,t ... More
Presented by Mr. tong WANG
on 14 Oct 2014 at 9:00 AM
on 16 Oct 2014 at 1:25 PM
on 15 Oct 2014 at 8:30 AM
on 16 Oct 2014 at 8:30 AM
This paper introduces the design and simulation of a WPM (Wire Position Monitor) used in the cryogenic system of an Accelerator Driven System (ADS). The WPM is designed to monitor the contraction of cold masses during the cooling-down operation. In this paper, POISSON-2D electrostatic field software is used to calculate the best characteristic impedance for the WPM. Furthermore, the time domain si ... More
Presented by Ms. Hongyan ZHU
HEPS is a new generation sychrotron light source in design in China.Its energy will be 5GeV and emittance will be 0.5~0.1nmrad.The alignment tolerance for the magnets in each girder is 30 micron. To achieve the goal we will apply the vibrating wire alignment system to align the magnets in each girder.
Presented by Mr. Xiaolong WANG