Increasing The Ags Polarization
DOWNLOAD
Download Increasing The Ags Polarization PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Increasing The Ags Polarization book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Increasing The Ags Polarization
DOWNLOAD
Author : A.D. Krisch
language : en
Publisher: American Institute of Physics
Release Date : 2003-06-11
Increasing The Ags Polarization written by A.D. Krisch and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-06-11 with Science categories.
The Ann Arbor Workshop on Increasing the AGS Polarization discusses the surprising spin effects discovered at lower energy accelerators, making the new multi-hundred-GeV RHIC polarized proton collider especially important. The four Siberian snakes in the two RHIC rings successfully preserved most polarization during acceleration and storage; RHIC's main problem was the low polarization injected from the AGS. The Workshop determined a quick and practical plan for increasing the AGS polarization by using three techniques to overcome the three types of depolarizing resonances.
Increasing Proton Polarization In Ags And Rhic
DOWNLOAD
Author : Vahid Houston Ranjbar
language : en
Publisher:
Release Date : 2002
Increasing Proton Polarization In Ags And Rhic written by Vahid Houston Ranjbar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Spin Dynamics Modeling In The Ags Based On A Stepwise Ray Tracing Method
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2006
Spin Dynamics Modeling In The Ags Based On A Stepwise Ray Tracing Method written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The AGS provides a polarized proton beam to RHIC. The beam is accelerated in the AGS from G[gamma]= 4.5 to G[gamma] = 45.5 and the polarization transmission is critical to the RHIC spin program. In the recent years, various systems were implemented to improve the AGS polarization transmission. These upgrades include the double partial snakes configuration and the tune jumps system. However, 100% polarization transmission through the AGS acceleration cycle is not yet reached. The current efficiency of the polarization transmission is estimated to be around 85% in typical running conditions. Understanding the sources of depolarization in the AGS is critical to improve the AGS polarized proton performances. The complexity of beam and spin dynamics, which is in part due to the specialized Siberian snake magnets, drove a strong interest for original methods of simulations. For that, the Zgoubi code, capable of direct particle and spin tracking through field maps, was here used to model the AGS. A model of the AGS using the Zgoubi code was developed and interfaced with the current system through a simple command: the AgsFromSnapRampCmd. Interfacing with the machine control system allows for fast modelization using actual machine parameters. Those developments allowed the model to realistically reproduce the optics of the AGS along the acceleration ramp. Additional developments on the Zgoubi code, as well as on post-processing and pre-processing tools, granted long term multiturn beam tracking capabilities: the tracking of realistic beams along the complete AGS acceleration cycle. Beam multiturn tracking simulations in the AGS, using realistic beam and machine parameters, provided a unique insight into the mechanisms behind the evolution of the beam emittance and polarization during the acceleration cycle. Post-processing softwares were developed to allow the representation of the relevant quantities from the Zgoubi simulations data. The Zgoubi simulations proved particularly useful to better understand the polarization losses through horizontal intrinsic spin resonances The Zgoubi model as well as the tools developed were also used for some direct applications. For instance, some beam experiment simulations allowed an accurate estimation of the expected polarization gains from machine changes. In particular, the simulations that involved involved the tune jumps system provided an accurate estimation of polarization gains and the optimum settings that would improve the performance of the AGS.
Challenges And Goals For Accelerators In The Xxi Century
DOWNLOAD
Author : Stephen Myers
language : en
Publisher: World Scientific
Release Date : 2016-02-26
Challenges And Goals For Accelerators In The Xxi Century written by Stephen Myers and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-02-26 with Science categories.
The past 100 years of accelerator-based research have led the field from first insights into the structure of atoms to the development and confirmation of the Standard Model of physics. Accelerators have been a key tool in developing our understanding of the elementary particles and the forces that govern their interactions. This book describes the past 100 years of accelerator development with a special focus on the technological advancements in the field, the connection of the various accelerator projects to key developments and discoveries in the Standard Model, how accelerator technologies open the door to other applications in medicine and industry, and finally presents an outlook of future accelerator projects for the coming decades.
The Ags Booster Lattice
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1987
The Ags Booster Lattice written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
The AGS Booster has three objectives. They are to increase the space charge limit of the AGS, to increase the intensity of the polarized proton beam by accumulating many linac pulses (since the intensity is limited by the polarized ion source), and to reaccelerate heavy ions from the BNL Tandem Van de Graaff before injection into the AGS. The machine is capable of accelerating protons at 7.5 Hertz from 200 MeV to 1.5 GeV or to lower final energies at faster repetition rates. The machine will also be able to accelerate heavy ions from as low as 1 MeV/nucleon to a magnetic rigidity as high as 17.6 Tesla-meters with a one second repetition rate. As an accumulator for polarized protons, the Booster should be able to store the protons at 200 MeV for several seconds. We expect that the Booster will increase the AGS proton intensity by a factor of four, polarized proton intensity by a factor of twenty to thirty, and will also enable the AGS to accelerate all species of heavy ions (at present the AGS heavy ion program is limited to the elements lighter than sulfur because it can only accelerate fully stripped ions). The construction project started in FY 1985 and is expected to be completed in 1989. The purpose of this paper is to provide a future reference for the AGS Booster lattice.
Ags Polarized H Source
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1985
Ags Polarized H Source written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
The AGS polarized H− source is now operational. During a month-long experimental physics run in July 1984, pulses equivalent to 15 .mu. A x 300 .mu.s (approx. 3 x 101° protons) were injected into the RFQ preaccelerator. Beam polarization, measured at 200 MeV, was approx. 75%. After the run, a program to increase the H− yield of the source was begun and significant progress has been made. The H− current is now frequently 20 to 30 .mu. A.A description of the source and some details of our operating experience are given. We also briefly describe the improvement program.
Thoughts And Facts From The Ags Polarized Proton Runs During The 1980s
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2002
Thoughts And Facts From The Ags Polarized Proton Runs During The 1980s written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
This workshop's focus is on considering ways for improving the proton beam polarization that the AGS delivers to the RHIC. This talk attempts to review the first decade of AGS polarization--the 1980's; to briefly describe some aspects of the machine situation, the depolarization avoidance strategies employed and the success achieved in AGS from the perspective of one of those involved.
Polarization Dynamics In Nuclear And Particle Physics Proceedings Of The 2nd Adriatico Research Conference
DOWNLOAD
Author : Asim Orhan Barut
language : en
Publisher: World Scientific
Release Date : 1993-12-22
Polarization Dynamics In Nuclear And Particle Physics Proceedings Of The 2nd Adriatico Research Conference written by Asim Orhan Barut and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-12-22 with categories.
In the four years since the first Trieste Meeting on Spin and Polarization Dynamics in Nuclear and Particle Physics, considerable progress has been made both in the theoretical and experimental aspects of this field. The polarization phenomena have given rise to many more detailed and crucial tests which enhance our understanding of particle physics. New information can also be uncovered in the process of conducting the various tests. For this reason, considerable efforts have been put into the present and future accelerators to extend the experimental data to measure polarization asymmetries for both polarized targets and polarized scattered and produced particles. The 2nd Adriatico Research Conference held in January 1992 brought together both theorists and experimentalists who presented many new findings. These findings have been compiled into this compact volume to give a complete picture of the wide range of theoretical and experimental problems, difficulties, results, prospects and hopes which are at the core of particle physics studies today. It will be a useful guide for the present status of polarization phenomena and their fundamental implications.
Introduction To Polarization Physics
DOWNLOAD
Author : Sandibek B. Nurushev
language : en
Publisher: Springer
Release Date : 2012-10-28
Introduction To Polarization Physics written by Sandibek B. Nurushev and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-28 with Science categories.
This book is devoted to the polarization (spin) physics of high energy particles and contains three parts. The first part presents the theoretical prefaces of polarization in the particle physics for interpretations, predictions and bases for understanding the following two parts. The second part of the book presents the description of the essential polarization experiments including the recent ones. This part is devoted to the innovative instrumentations, gives the parameters of the polarized beams, targets, polarized gas jets and polarimeters. The third part of the book concentrates on the important achievements in polarization physics. The book can be used in lectures on nuclear and particle physics and and nuclear instruments and methods. As supplementary reading this book is useful for researchers working in particle and nuclear physics.
International Cooperation In Big Science
DOWNLOAD
Author : United States. Congress. House. Committee on Science and Technology. Task Force on Science Policy
language : en
Publisher:
Release Date : 1986
International Cooperation In Big Science written by United States. Congress. House. Committee on Science and Technology. Task Force on Science Policy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Nuclear physics categories.