Download or read book Offset Calibration of the Beam Position Monitor Using External Means written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of the offset of the electrical center of the beam position monitor (BPM) relative to the mechanical center is required for the absolute beam position measurement in the injector synchrotron and the storage ring of the APS. Conventionally, RF signal is sent to an antenna or through a wire carefully aligned in the vacuum chamber and the signal is measured at each electrode. A new method using only external means which does not involve mechanical alignment inside the vacuum chamber was applied to the injector synchrotron BPM unit in this work. The result shows a good agreement with the wire method within 15?m error. A similar measurement on the storage ring BPM will also be discussed.

Download or read book Offset Calibration of the Beam Position Monitor Using External Means written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beam Position Monitor Calibration for the Advanced Photon Source written by and published by . This book was released on 1993 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the sensitivity and offset calibration for the beam position monitors (BPMs) using button-type pickups in the injector synchrotron, storage ring, and insertion devices of the Advanced Photon Source (APS). In order to reduce the overall offset and to isolate the error (r"100?m) due to the low fabrication tolerance in the extruded storage ring vacuum chamber, the electrical offset is minimized by carefully sorting and matching the buttons and cables according to the button capacitance and the characteristic impedances of the cable and the button feedthrough. The wire method is used for the sensitivity calibration, position-to-signal mapping, and measurement of resolution and long-term drift (r"1 mV) of the processing electronics. The processing electrons was also tested at Stanford Synchrotron Radiation Laboratory (SSRL) using a real beam, with results indicating better than 25?m resolution for the APS storage ring. Conversion between the BPM signal and the actual beam position is done by using polynomial expansions fit to the mapping data with absolute accuracy better than 25?m within ±5 mm square. Measurement of the effect of button mispositioning and mechanical inaccuracy of the extruded storage ring vacuum chamber, including deformation under vacuum, will be also discussed.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensitivity and Offset Calibration for the Beam Position Monitors at the Advanced Photon Source written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The beam position monitors (BPMs) play a critically important role in commissioning and operation of accelerators. Accurate determination of the offsets relative to the magnetic axis and sensitivities of individual BPMs is thus needed. We will describe in this paper the schemes for calibrating all of the 360 BPMs for sensitivity and offset in the 7-GeV Advanced Photon Source (APS) storage ring and the results. For the sensitivity calibration, a 2-dimensional map of the BPM response in the aluminum vacuum chamber is obtained theoretically, which is combined with the measured nonlinear response of the BPM electronics. A set of 2-dimensional polynomial coefficients is then obtained to approximate the result analytically. The offset calibration of the BPMs is done relative to the magnetic axis of the quadrupoles using the beam. This avoids the problem arising from various mechanical sources as well as the offset in the processing electronics. The measurement results for the resolution and long-term drift of the BPM electronics shows 0.06-[mu]m/[radical]Hz resolution and 2-[mu]m/hr drift over a period of 1.5 hrs.

Download or read book Sensitivity and Offset Calibration for the Beam Position Monitors at the Advanced Photon Source written by and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 1993 Particle Accelerator Conference written by and published by . This book was released on 1993 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accelerator Instrumentation written by Hinkson and published by American Inst. of Physics. This book was released on 1993 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Proceedings of the October 1992 workshop, including papers and poster sessions. Papers address accelerator reliability, beam diagnostics, beam monitors, signal processing, fluorescent screens, timing systems, and software analysis. Lacks an index. Annotation c. by Book News, Inc., Portland, Or.

Download or read book Accelerator Instrumentation 3rd Annual Workshop written by Walter Barry and published by American Institute of Physics. This book was released on 1992 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributors associated with new accelerators, such as the Superconducting Super Collider and the Advanced Photon Source, and established machines, such as Fermilab and CERN, share their experiences concerning instrumentation. Among the topics are the development of a low-intensity current monitor s

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science Abstracts written by and published by . This book was released on 1993 with total page 2316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 1999 Particle Accelerator Conference written by and published by . This book was released on 1999 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 1995 Particle Accelerator Conference written by and published by . This book was released on 1996 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beam Instrumentation Workshop written by and published by . This book was released on 1998 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Complications in Anesthesia E Book written by Lee A Fleisher and published by Elsevier Health Sciences. This book was released on 2017-09-29 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a unique, problem-solving approach, Complications in Anesthesia, 3rd Edition, walks you through effective solutions to common complications in anesthesia and critical care. This practical reference uses a highly structured, clearly illustrated format to bring you up to date with what’s new in the field, help you anticipate potential challenges, and guide you through life-saving solutions. Presents content in an updated, logical organization covering various types of complications (drugs, testing, intubation, line insertion, surgical procedures, etc.) followed by differential diagnosis and treatment of signs of complications (intraoperative, such as hypoxia or hypotension; and postoperative, such as MI). Follows a problem-based, practice-oriented approach throughout; case synopses are followed by concise coverage of recognition, risk assessment, implications, management, and prevention. Allows you to review the case reports, contemplate the implications, then check your response against what the experts have to say. Includes numerous photographs, diagrams, flow charts, and tables that illustrate key concepts. Ideal as a clinical reference and as a study tool when preparing for oral boards. Brings you up to date with new safety standards and the latest ASA guidelines.

Download or read book Complications in Anesthesia written by John L. Atlee and published by Elsevier Health Sciences. This book was released on 2007-01-01 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical text focuses on complications in the practice of anesthesia. Divided into sections similar to the thought processes involved in decision-making. Thumb indexing and cross-references are also included. All chapters have a case synopsis, problem analysis, and discussion of management and prevention.