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MOPB10 The Advanced Photon Source Upgrade (APSU) Superconducting Undulator (SCU) Component Database (CDB) Utilization vacuum, database, photon, undulator 44
 
  • G.C. Avellar, E.A. Anliker, J.E. Lerch, J.G. Saliba, M.E. Szubert
    ANL, Lemont, Illinois, USA
 
  Funding: Work supported by the U.S. Department of Energy, Office of Science under Control DE-AC02-06CH11357.
The Component Database (CDB) is a document management platform created for the use of the Advanced Photon Source Upgrade (APSU) Project. It serves two major functions: (1) a centralized location to link all data relating to field-replaceable upgrade components, and (2) a way to track the components throughout the machine’s 25-year lifetime. There are four (4) Superconducting Undulators (SCUs): two (2) Inline 16.5mm period devices, one (1) Canted 16.5mm period device, and one (1) Canted 18.5mm period device. Throughout the production process for these devices, tracking components between the different designs of SCU’s has proven to be a logistical issue, as there are uniform components among all 4 devices, but many unique components as well. As the scope evolved from a Research and Development (R&D) activity to a production scope, the CDB has been critical in communicating with a growing team, allowing anyone to identify a part or assembly and access all its design and manufacturing data. The 4.8-meter long SCUs are the first of their kind, requiring thorough onsite inspections, intricate assembly procedurals, and approved safety protocols. This is ideal information to document in an electronic traveler (e-traveler), which can then be attached to an item within the CDB. By providing a straightforward process for technicians to follow, the risk of miscommunication and unsafe practices are minimized. The CDB plays a vital role in simplifying and optimizing the transition of the SCU from an R&D unit to a production scope, from procurement to inspection, assembly and installation, and throughout the lifespan of machine maintenance.
 
poster icon Poster MOPB10 [0.744 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB10  
About • paper received ※ 28 July 2021       paper accepted ※ 05 October 2021       issue date ※ 10 November 2021  
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MOPB11 The Advanced Photon Source Upgrade (APSU) Straight Section Vacuum Systems First Article Fabrication vacuum, photon, undulator, operation 47
 
  • M.E. Szubert, E.A. Anliker, G.C. Avellar, J.E. Lerch
    ANL, Lemont, Illinois, USA
 
  Funding: Work supported by the U.S. Department of Energy, Office of Science, under Control DE-AC02-06CH11357.
The Advanced Photon Source Upgrade (APSU) includes 40 straight sections, 35 of which will be outfitted with Superconducting Undulators (SCUs) or Hybrid-Permanent Magnetic Undulators (HPMUs). The vacuum systems for these devices are primarily fabricated from aluminum extrusions and are required to provide Ultra-High Vacuum continuity between storage ring (SR) sec-tors for a nominal distance of ~5.4 meters. Each vacuum system has unique fabrication challenges, but all first article (FA) components have been produced successfully. The FAs arrived onsite at ANL installation-ready, but have undergone functional testing activities to verify the production and vacuum certifications. The Insertion Device Vacuum Chamber (IDVC), used in HPMU sec-tors, is produced by SAES Rial Vacuum (Parma, Italy). The SCU vacuum system components are produced by two vendors, Cinel Instruments (Venice, Italy) and Anderson Dahlen (Ramsey, MN, USA). Based on the reliable outcomes and lessons learned from the FAs, production of the straight section vacuum systems is underway.
 
poster icon Poster MOPB11 [2.357 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB11  
About • paper received ※ 27 July 2021       paper accepted ※ 05 October 2021       issue date ※ 27 October 2021  
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MOPC13 Recent Studies on the Vibration Response of NSLS-II Girder Support System damping, experiment, quadrupole, alignment 81
 
  • S.K. Sharma, C.J. Spataro
    BNL, Upton, New York, USA
 
  The designs of various girder support systems were reviewed recently in a MEDSI School tutorial*. A comparison of their horizontal transmissibility values in (2-100) Hz band showed that the NSLS-II girder support system had a lower horizontal transmissibility despite its first natural frequency being the lowest (~30 Hz). Detailed vibration tests and FE analyses have been performed to understand this anomaly and to assess the role of viscoelastic damping pads underneath the NSLS-II girders. The analyses were extended to include harmonic response to model viscoelastic properties and random vibrations to obtain relative motions between the magnets. The results of these new tests and FE analyses are discussed in this paper.
*S. Sharma, "Storage Ring Girder Issues for Low Emittance Storage Rings", Tutorial, Medsi School 2, Grenoble, France, October 2-25, 2019.
 
poster icon Poster MOPC13 [0.493 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC13  
About • paper received ※ 20 July 2021       paper accepted ※ 17 September 2021       issue date ※ 01 November 2021  
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TUOA03 Zero-Length Conflat Fin-Type Nonevaporable Getter Pump Coated with Oxygen-Free Palladium/Titanium vacuum, ECR, power-supply, electron 107
 
  • Y. Sato
    Yokohama National University, Graduate School of Engineering Science, Yokohama, Japan
  • A.H. Hashimoto, M. Yamanaka
    NIMS, Tsukuba, Ibaraki, Japan
  • T. Kikuchi, K. Mase
    KEK, Tsukuba, Japan
  • T. Miyazawa
    Sokendai, The Graduate University for Advanced Studies, Tsukuba, Japan
  • S. Ohno
    Yokohama National University, Yokohama, Japan
 
  Funding: This work was partly supported by a JSPS KAKENHI (JP19K05280), a TIA-Kakehashi (TK19-035), and the 2019 Takahashi Industrial Economic Research Foundation grant, and was supported by NIMS TEM Station.
We have developed a zero-length conflat fin-type nonevaporable getter (NEG) pump that uses oxygen-free palladium/titanium (Pd/Ti)*. After baking at 150 degrees centigrade for 12 h, the pumping speeds of the NEG pump for H2 and CO were 2350~800 L/s and 1560~20 L/s, respectively, in the pumped-quantity range 0.01~30 Pa L. The morphologies of oxygen-free Pd/Ti films on the partition plates and the base plate were examined by scanning electron microscopy, scanning transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The Ti was completely coated with Pd on the bottom, whereas the partition plates were covered by Pd/Ti nanostructures. Our new NEG pump is ideal for maintaining ultrahigh vacuums in the range 10-8 to 10-9 Pa, because (a) its pumping speeds for H2 and CO are quite large, (b) it can evacuate H2O and CO2 when an ionization gauge is used in the vacuum system, (3) it can be activated by baking at 150 degrees centigrade for 12 h, (c) its pumping speed does not decrease even after 9 cycles of pumping, baking, cooling to room temperature, and exposure to air**, (5) it requires neither a dedicated power supply nor electric feedthroughs, and (6) it is space saving and lightweight.
*T. Miyazawa et al., J. Vac. Sci. Technol. A 36, 051601 (2018).
**T. Kikuchi et al., AIP Conf. Proc. 2054, 060046 (2019).
 
slides icon Slides TUOA03 [1.643 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUOA03  
About • paper received ※ 30 July 2021       paper accepted ※ 14 October 2021       issue date ※ 08 November 2021  
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TUPA01 Oxygen-Free Titanium Thin Film as a New Nonevaporable Getter with an Activation Temperature as Low as 185 °C vacuum, quadrupole, synchrotron-radiation, synchrotron 119
 
  • M. Ono, I. Yoshikawa, K. Yoshioka
    University of Tokyo, Kashiwa, Japan
  • T. Kikuchi, K. Mase
    KEK, Tsukuba, Japan
  • K. Mase
    Sokendai, The Graduate University for Advanced Studies, Tsukuba, Japan
  • Y. Masuda, Y. Nakayama
    Tokyo University of Science, Noda, Japan
  • S. Ohno
    Yokohama National University, Yokohama, Japan
  • K. Ozawa
    TIT, Tokyo, Japan
  • Y. Sato
    Yokohama National University, Graduate School of Engineering Science, Yokohama, Japan
 
  Funding: This work was partly supported by JSPS KAKENHI (17K05067, 19K05280) and TIA-Kakehashi (TK19-035, TK20-026). The XPS measurements were performed under the Photon Factory proposal (2018S2-005).
Although nonevaporable getter (NEG) pumps are widely used in synchrotron radiation facilities, pure metal Titanium (Ti) has not been used as a NEG because the activation temperature of a Ti thin film deposited by DC magnetron sputtering was reported to be 350-400 °C*. Recently Miyazawa et al. found that high-purity Ti deposited under ultra-high vacuum (UHV) followed by N2 introduction works as a NEG with an activation temperature of 185 °C**,***. Since the concentration of impurities such as O, C, and N in the Ti thin film prepared by this method is 0.05% or less, we named this as oxygen-free Ti. In this study, we evaluated the pumping properties of oxygen-free Ti thin films after high-purity N2 introduction by total and partial pressure measurements. A vacuum vessel with oxygen-free Ti deposited on the inner walls was found to pump H2, H2O, O2, CO and CO2 even after 30 cycles of high purity N2 introduction, air exposure, pumping, and baking at 185 °C. Furthermore, we analyzed the oxygen-free Ti thin films after high-purity N2 or air introduction by synchrotron radiation X-ray photoelectron spectroscopy. The results show that more TiN was formed when high-purity N2 was introduced after oxygen-free Ti deposition. High purity of the Ti thin film and TiN formation on the surface seem to be responsible for the reduced activation temperature as low as 185 °C.
*C. Benvenuti et al., J. Vac. Sci. Technol. A 16, 148 (1998).
**T. Miyazawa et al., Vac. Surf. Sci. 61, 227 (2018).
***KEK, patent pending, WO2018097325 (Nov. 28, 2017).
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA01  
About • paper received ※ 30 July 2021       paper accepted ※ 14 October 2021       issue date ※ 01 November 2021  
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TUPA04 Investigations on Stability Performance of Beamline Optics Supports at BSRF optics, GUI, SRF, vacuum 125
 
  • W.F. Sheng, H. Liang, Y.S. Lu, Z. Zhang
    IHEP, Beijing, People’s Republic of China
 
  Funding: This research is supported by National Natural Science Foundation of China (NSFC) (No.11905243).
The stability of beamline optics directly affects the beamline’s performances, such as coherence, focal size, position stability of the beam and so on, it has become a serious issue for a low emittance 4th generation light source. The vibration transmitting function of supports plays a big role in the stability performance of the optics. In order to find out a stable supporting structure, several types of support structures were tested, and the transfer ratio were described. The result shows that wedge struc-tures generally have a lower transfer ratio, and point contact support structures should be avoided.
 
poster icon Poster TUPA04 [2.193 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA04  
About • paper received ※ 01 August 2021       paper accepted ※ 17 September 2021       issue date ※ 29 October 2021  
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TUPA12 The Design and Prototype Test for the Tunnel Foundation of High Energy Photon Source storage-ring, ground-motion, photon, emittance 141
 
  • F. Yan, X.P. Jing, G.P. Lin, J. Qiu, G. Xu, N.C. Zhou
    IHEP, Beijing, People’s Republic of China
  • A.Z. Lu, Y.L. Xing, Z.G. Xu, Y.S. Zhang
    CEEDI, Beijing, People’s Republic of China
 
  High Energy Photon Source (HEPS) is being built in China with challenging beam stability requirements. To fulfil the 25 nm ground motion restriction on the storage ring tunnel slab, two prototype slabs with different design schemes were constructed on the HEPS site. The first scheme adopted a 1 m reinforced concrete with replace-ment layer of a 1 m sand & stone underneath. The second scheme employed an extra 5 m grouting layer below the previously mentioned two layers. A series of tests had been carried out. The prototype slab with grouting layer is testified to have comparable vibration level with the bare ground, which is under 25 nm without traffic inside the HEPS campus, while the vibration level is amplified a lot on the other prototype slab. However, it is hard to make the grouting layer homogeneously under the kilo-metre-scale tunnel and besides the cost is unacceptable for 5 m grouting with such a large scale. The finalized design is fixed to be a 1 m reinforced concrete slab and 3 m replacement layer underneath using plain concrete. In this paper, the details of the prototype slab test results will be presented.  
poster icon Poster TUPA12 [2.300 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA12  
About • paper received ※ 20 July 2021       paper accepted ※ 17 September 2021       issue date ※ 08 November 2021  
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TUPC01 Study of Copper Microstructure Produced by Electroforming for the 180-GHz Frequency Corrugated Waveguide GUI, ECR, electron, wakefield 178
 
  • K.J. Suthar, G. Navrotski, A. Zholents
    ANL, Lemont, Illinois, USA
  • P.R. Carriere
    RadiaBeam, Santa Monica, California, USA
 
  Funding: Work supported by Laboratory Directed Research and Development funding from Argonne National Laboratory, provided by the Director, Office of Science, of the US DOE under contract DE-AC02-06CH11357.
Fabrication of the corrugated structure that generates a field gradient 100 m-1 at 180 GHz is challenging and required an unconventional method of production. The corrugated waveguide with 2 mm inner diameter will be produced by electroplating copper on the aluminum mandrel as proposed in the reference*. A thin seed layer is usually applied to achieve uniform wetting to plate copper on the aluminum mandrel. The copper waveguide is retrieved by removing aluminum and the seed layer. Therefore, uniform copper plating and etching of the seed layer and the Aluminum mandrel is a crucial step to keep the surface free of impurities that are especially necessary for the RF application. Previous studies suggest that electroplated copper has variations in both electrical and mechanical properties compared with those of bulk copper from the batches of production. In this paper, we discuss the copper microstructure produced by the electroforming method and literature study on the variations, which can be attributed to the disparity of the crystallinity of grains structure in plated material.
*A. Zholentset al., "A Conceptual Design of a Compact Wakefield Accelerator for a High Repetition Rate Multi-User X-ray Free-Electron Laser Facility, "in Proc. IPAC 18, 2018, pp. 1266-1268.
 
poster icon Poster TUPC01 [1.717 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC01  
About • paper received ※ 21 July 2021       paper accepted ※ 05 November 2021       issue date ※ 06 November 2021  
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TUPC02 Bringing the Ground Up (When Is Two Less Than One?) optics, photon, distributed, software 182
 
  • A.A. Khan, C.A. Preissner
    ANL, Lemont, Illinois, USA
 
  Funding: Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility, operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
The Advanced Photon Source Upgrade project has employed the use of high heat load dual mirror systems in the new feature beamlines being built. Due to the shallow operating angles of the mirrors at a particular beamline, XPCS, the two mirrors needed to be approximately 2.5 m apart to create a distinct offset. Two separate mirror tanks are used for this system. However, it is unclear if the vibrational performance of these tanks would be better if they were both mounted on one large plinth or each mounted on a small plinth. Using accelerometers at the installation location, the floor vibrations were measured. The resulting frequency response function was then imported into a Finite Element Analysis software to generate a harmonic response analysis. The two different plinth schemes were modeled and the floor vibration was introduced as an excitation to the analysis. The relative pitch angle (THETA Y) between the mirrors was evaluated as well as the relative gap between the mirrors (XMAG). Results showed that a single plinth reduces the relative XMAG (RMS) compared to two plinths by approximately 25%. However, the relative THETA Y (RMS), which is arguably more critical, is significantly lower by approximately 99.7% in two plinths when compared to a single plinth. Therefore, it is more effective to use two separate plinths over a longer distance as opposed to a single longer granite plinth.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC02  
About • paper received ※ 23 July 2021       paper accepted ※ 15 October 2021       issue date ※ 10 November 2021  
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WEPB07 Magnet Module Assembly for the APS Upgrade alignment, storage-ring, vacuum, photon 283
 
  • K.J. Volin, R. Bechtold, A.K. Jain, W.G. Jansma, Z. Liu, J. Nudell, C.A. Preissner
    ANL, Lemont, Illinois, USA
 
  Funding: Work supported by the U.S. Department of Energy, Office of Science under Control DE-AC02-06CH11357.
With APSU well into the procurement phase of the project, the APSU assembly team has completed a "DLMA Practice Assembly", comprising of the support system, and all magnets required to complete a module. The purpose of this test was to verify assembly and documentation procedures, ensure proper fit between mating components, and verify that alignment specifications can be met. The results of this exercise are presented. Though this test was completed on the Argonne site, work continues on building 981, the APSU offsite warehouse, where our first production plinths and girders have been shipped, and where production modules will be assembled. This space has been outfitted by Argonne contractors and APSU Assembly technicians with 1) 5 parallel DLM/FODO module assembly stations, each complete with a 3 tn. overhead crane, retractable cleanroom, staging tables, and tools, and 2) 2 QMQ module assembly stations each complete with a 5 tn. gantry crane, assembly support stands, staging tables, and tools. An overview of this production assembly space is also presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB07  
About • paper received ※ 07 September 2021       paper accepted ※ 29 October 2021       issue date ※ 06 November 2021  
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