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Vacuum Chamber Design Of Nsls Ii Storage Ring
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Book Synopsis Vacuum Chamber Design of NSLS-II Storage Ring by :
Download or read book Vacuum Chamber Design of NSLS-II Storage Ring written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: National Synchrotron Light Source II (NSLS II) will be a 3-GeV, 792-meter circumference, 3rd generation synchrotron radiation facility, with ultra low emittance and extremely high brightness. the storage ring has 30 Double-Bend-Achromatic (DBA) cells. in each cell, there are five magnets and chamber girders, and one straight section for insertion devices or Radio Frequency (RF) cavities or injection. Most vacuum chambers are made from extruded aluminum with two different cross sections: one fitted in the dipole magnets, and the other surrounded by multipole magnets. They discuss the layout of the DBA cells, the detailed design of the cell's vacuum chambers, the mounting of the Beam-Position-Monitor (BPM) buttons, discrete absorbers, lumped pumps and the distributed Non-Evaporable Getter (NEG) strips, and describe the fabrication and testing of these prototype cell chambers. The account also details the development of the chamber bakeout process, the NEG stri's supports, and the RF shielded bellows.
Book Synopsis Design of Vacuum Chambers Downstream of NSLS X-ray Ring Insertion Devices by :
Download or read book Design of Vacuum Chambers Downstream of NSLS X-ray Ring Insertion Devices written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In an electron storage ring the maximum power deposited in the vacuum chamber walls is that produced by the electron beam as it is accelerated through the bending magnets. In the NSLS x-ray ring this power is 58 watts per linear cm of arc chamber length, or 2 kw/cm2 taking into account the beam size. Standard water cooling techniques are adequate to protect the chambers from overheating under this range of power density. However, with the installation of wigglers and undulators, cooling of the chambers is no longer a trivial matter. Without proper interlocks and cooling, beams from these insertion devices can easily do permanent thermal damage to the chamber walls. As part of the NSLS Phase II project three insertion devices are planned for the beamlines X-1, X-17 and X-25, namely, a soft x-ray undulator, a superconducting wiggler and a hybrid wiggler. The effect of these insertion devices on the design of vacuum chambers downstream of these devices is the subject of this paper. 4 refs., 3 figs., 1 tab.
Download or read book NSLS II Vacuum System written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: National Synchrotron Light Source II, being constructed at Brookhaven, is a 3-GeV, 500 mA, 3rd generation synchrotron radiation facility with ultra low emittance electron beams. The storage ring vacuum system has a circumference of 792 m and consists of over 250 vacuum chambers with a simulated average operating pressure of less than 1 x 10−9 mbar. A summary of the update design of the vacuum system including girder supports of the chambers, gauges, vacuum pumps, bellows, beam position monitors and simulation of the average pressure will be shown. A brief description of the techniques and procedures for cleaning and mounting the chambers are given.
Book Synopsis Beam Vacuum Chambers for Brookhaven's Muon Storage Ring by :
Download or read book Beam Vacuum Chambers for Brookhaven's Muon Storage Ring written by and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis APS Storage Ring Vacuum Chamber Fabrication by :
Download or read book APS Storage Ring Vacuum Chamber Fabrication written by and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis APS Storage Ring Vacuum Chamber Fabrication by :
Download or read book APS Storage Ring Vacuum Chamber Fabrication written by and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1104-m circumference Advanced Photon Source Storage Ring Vacuum System is composed of 240 individual sections, which are fabricated from a combination of aluminum extrusions and machined components. The vacuum chambers will have 3800 weld joints, each subject to strict vacuum requirements, as well as a variety of related design criteria. The vacuum criteria and chamber design are reviewed, including a discussion of the weld joint geometries. The critical fabrication process parameters for meeting the design requirements are discussed. The experiences of the prototype chamber fabrication program are presented. Finally, the required facilities preparation for construction activity is briefly described. 6 refs., 6 figs., 1 tab.
Book Synopsis Vibration Study of the APS Storage Ring Vacuum-chamber by : J.A. Jendrzejczyk
Download or read book Vibration Study of the APS Storage Ring Vacuum-chamber written by J.A. Jendrzejczyk and published by . This book was released on 1991 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manufacture of the ALS Storage Ring Vacuum System by :
Download or read book Manufacture of the ALS Storage Ring Vacuum System written by and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Light Source (ALS) storage rings has a 4.9 meter magnetic radius and an antechamber type vacuum chamber. These two requirements makes conventional bent tube manufacturing techniques difficult. The ALS sector vacuum chambers have been made by matching two halves out of aluminum plate and welding at the mid plane. Each of these chambers have over 50 penetrations with metal sealed flanges and seven metal sealed poppet valves which use the chamber wall as the valve seat. The sector chambers are 10 meter long and some features in the chambers must be located to .25 mm. This paper describes how and how successfully these features have been achieved. 2 refs., 5 figs.
Book Synopsis APS Storage Ring Vacuum Chamber by :
Download or read book APS Storage Ring Vacuum Chamber written by and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vacuum characteristics of the APS storage ring vacuum chamber prototype, Section One (S1), is presented. The base pressure achieved was 4 x 10−11, the welds contained no virtual or real leaks, the NeG strip mounting design and activation procedures have been determined, and S1 was found contaminated with hydrocarbons.
Book Synopsis UHV Seal Studies for the Advanced Photon Source Storage Ring Vacuum System by :
Download or read book UHV Seal Studies for the Advanced Photon Source Storage Ring Vacuum System written by and published by . This book was released on 1991 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Photon Source (APS) Storage Ring Vacuum Chambers (SRVC) are constructed of aluminum. The chamber design incorporates aluminum alloy 2219-T87 Conflat flanges welded to an aluminum alloy 6063-T5 extruded chamber body. Vacuum connections to the aluminum Conflat chamber flanges are by means of 304 stainless steel Conflat flanges. To evaluate the Conflat seal assemblies relative to vacuum bake cycles, a Conflat Bake Test Assembly (CBTA) was constructed, and thermal cycling tests were performed between room temperature and 150°C on both stainless steel to aluminum Conflat assemblies and aluminum to aluminum Conflat assemblies. A Helicoflex Bake Test Assembly (HBTA) was similarly constructed to evaluate Helicoflex seals. Both Conflat and Helicoflex seals were studied in a SRVC Sector String Test arrangement of five SRVC sections. The CBTA, HBTA and SRVC tests and their results are reported. 3 refs., 2 figs., 2 tabs.
Book Synopsis Progress with NSLS-II Injection Straight Section Design by :
Download or read book Progress with NSLS-II Injection Straight Section Design written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The NSLS-II injection straight section (SR) consists of pulsed and DC bumps, septa system, beam trajectory correction and diagnostics systems. In this paper we discuss overall injection straight layout, preliminary element designs, specifications for the pulsed and DC magnets and their power supplies, vacuum devices and chambers and diagnostics devices. Prior to selecting the current 'conventional' design of the injection straight section we analyzed an option of injection via pulsed multipole pioneered at PF-AR. We found that this promising approach was not suited to the NSLS-II storage ring optics, since it would require a impractically compact arrangement of the injection straight section components and a complex modification of the transport line optics due to the strong focusing of the injected beam passing off the pulsed multipole axis. In addition, the requirement for a small injection transient of the stored beam orbit severely constrains the vertical alignment tolerance of the pulsed multipole. The design of the NSLS-II injection straight section is now completed with exception of transition chamber details, which will be adjusted to accommodate the actual layouts of the pulsed magnets.
Book Synopsis Beam Vacuum System of Brookhaven's Muon Storage Ring by :
Download or read book Beam Vacuum System of Brookhaven's Muon Storage Ring written by and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A storage ring with a circumference of 45 m is being built at Brookhaven to measure the g-2 value of the muons to an accuracy of 0.35 ppm. The beam vacuum system of the storage ring will operate at 10−7 Torr and has to be completely non-magnetic. It consists of twelve sector chambers. The chambers are constructed of aluminum and are approximately 3.5 m in length with a rectangular cross-section of 16.5 cm high by 45 cm at the widest point. The design features, fabrication techniques and cleaning methods for these chambers are described. The beam vacuum system will be pumped by forty eight non-magnetic distributed ion pumps with a total pumping speed of over 2000 l/sec. Monte Carlo simulations of the pressure distribution in the muon storage region are presented.
Book Synopsis Vacuum System Development Status for the APS (Advanced Photon Source) Storage Ring by :
Download or read book Vacuum System Development Status for the APS (Advanced Photon Source) Storage Ring written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of the design and fabrication of a prototype sector of the storage ring vacuum system for the Advanced Photon Source is described. The 26.5-m-long prototype sector will be assembled within a full-scale magnet and tunnel mockup to study interspacial component relationships for maintenance, as well as the vacuum system operational performance. Each completed vacuum section is mounted as an integral part of the modular structure that contains the magnets and magnet power supplies on a common base. Unique automatic machine welding designs and techniques are employed in the fabrication of the aluminium vacuum chambers from extrusions. Special chamber bending procedures and measurements checks are used to maintain the required flatness of the insider chamber light gap surfaces. Photo-electron yields due to low-energy photons in the narrow channel gap of the vacuum chamber and their potential effects on the overall outgassing rate are found to be negligible. 9 refs., 5 figs.
Author :Brookhaven National Laboratory. National Synchrotron Light Source Publisher : ISBN 13 : Total Pages :226 pages Book Rating :4.:/5 (89 download)
Book Synopsis Activity report by : Brookhaven National Laboratory. National Synchrotron Light Source
Download or read book Activity report written by Brookhaven National Laboratory. National Synchrotron Light Source and published by . This book was released on 2004 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy and Water Development Appropriations for 2011, Part 3, February 2010, 111-2 Hearings by :
Download or read book Energy and Water Development Appropriations for 2011, Part 3, February 2010, 111-2 Hearings written by and published by . This book was released on 2010 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher : ISBN 13 : Total Pages :1284 pages Book Rating :4.3/5 (121 download)
Book Synopsis Energy and Water Development Appropriations for 2011: Dept. of Energy fiscal year 2011 justifications (cont.) by : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Download or read book Energy and Water Development Appropriations for 2011: Dept. of Energy fiscal year 2011 justifications (cont.) written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2010 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Active Interlock System for the NSLS X-ray Ring Insertion Devices by :
Download or read book An Active Interlock System for the NSLS X-ray Ring Insertion Devices written by and published by . This book was released on 1991 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the design and operation of an active interlock system which has been installed in the NSLS X-ray electron storage ing to protect the vacuum chamber from thermal damage by mis-steered high power photon beams from insertion devices (IDs). the system employs active beam position detectors to monitor beam motion in the ID straight sections and solid state logic circuitry to dump'' the stored beam in the event of a fault condition by interrupting the rf. To ensure a high degree of reliability, redundancy and continuous automatic checking has been incorporated into the design. Overall system integrity is checked periodically with beam at safe levels of beam current. 2 refs., 3 figs.
