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Efficiency Of The Fermilab Electron Coolers Collector
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Book Synopsis Efficiency of the Fermilab Electron Cooler's Collector by : A. Shemyakin
Download or read book Efficiency of the Fermilab Electron Cooler's Collector written by A. Shemyakin and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The newly installed Recycler Electron Cooling system (REC) at Fermilab [1] will work at an electron energy of 4.34 MeV and a DC beam current of 0.5 A in an energy recovery scheme. As a part of the Electron cooling project, the efficiency of the collector for the REC was optimized at a dedicated test bench to the level of relative current losses of 5 {center_dot} 10{sup -6}. The paper discusses the test bench measurements for several distributions of a transverse magnetic field in the collector cavity.
Book Synopsis Electron Beam Collector with a Low Back Flow by :
Download or read book Electron Beam Collector with a Low Back Flow written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Generation of a DC electron beam in the future Fermilab electron cooler[1] employs an electrostatic acceleration and a beam energy recovery, so that electrons are decelerated from the nominal energy of 4.3 MeV they have in the cooling section to few keV in the collector. Stable performance of this scheme requires a current loss[delta]I below 10[micro]A at the beam current up to the nominal value of I= 0.5 A. One of sources of the loss is a back flow of secondary electrons from the beam collector. The paper discusses principles and performance of a collector with the low current loss. Electric and magnetic fields in the collectors used in existing electron coolers are axially symmetrical. For practically interesting parameters, such collectors can not provide[delta]I/I
Book Synopsis Performance of the Fermilab's 4.3 MeV Electron Cooler by : C. W. Schmidt
Download or read book Performance of the Fermilab's 4.3 MeV Electron Cooler written by C. W. Schmidt and published by . This book was released on 2006 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 4.3 MeV DC electron beam is used to cool longitudinally an antiproton beam in the Fermilab's Recycler ring. Cooling capabilities of the electron beam are characterized by the drag rate that was measured at various conditions. Fitting the results with a formula for non-magnetized cooling gives electron parameters that agree within a factor of 2 with independently measured electron beam properties.
Book Synopsis Low-energy Run of Fermilab Electron Cooler's Beam Generation System by :
Download or read book Low-energy Run of Fermilab Electron Cooler's Beam Generation System written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Status of the Fermilab Electron Cooling Recirculation Project by :
Download or read book Status of the Fermilab Electron Cooling Recirculation Project written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The electron cooling project requires a high current electron beam with high reliability to provide the consistent cooling required by Fermilab's physics program. We are using a 5URE-2 Pelletron to provide this beam. The program is developing a high current DC recirculating electron beam with high recovery efficiency. The present layout uses 2 sets of tubes with acceleration, a 180{sup o} bend, and deceleration for a total of about 10 meters of beam line. The project's nominal operating parameters are .5 A at 4.3 MeV with the emission cathode immersed in a 200-600 G magnetic field.
Book Synopsis Summary of Fermilab's Recycler Electron Cooler Operation and Studies by :
Download or read book Summary of Fermilab's Recycler Electron Cooler Operation and Studies written by and published by . This book was released on 2012 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fermilab's Recycler ring was used as a storage ring for accumulation and subsequent manipulations of 8 GeV antiprotons destined for the Tevatron collider. To satisfy these missions, a unique electron cooling system was designed, developed and successfully implemented. The most important features that distinguish the Recycler cooler from other existing electron coolers are its relativistic energy, 4.3 MV combined with 0.1-0.5 A DC beam current, a weak continuous longitudinal magnetic field in the cooling section, 100 G, and lumped focusing elsewhere. With the termination of the Tevatron collider operation, so did the cooler. In this article, we summarize the experience of running this unique machine.
Book Synopsis Fermilab 4.3-MeV Electron Cooler by :
Download or read book Fermilab 4.3-MeV Electron Cooler written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Recycler Electron Cooler (REC) was the first cooler working at a relativistic energy (gamma = 9.5). It was successfully developed in 1995-2004 and was in operation at Fermilab in 2005-2011, providing cooling of antiprotons in the Recycler ring. After introducing the physics of electron cooling and the REC system, this paper describes measurements carried out to tune the electron beam and optimize its cooling properties. In particular, we discuss the cooling strategy adopted for maximizing the collider integrated luminosity.
Book Synopsis Fermilab Electron Cooling Experiment by :
Download or read book Fermilab Electron Cooling Experiment written by and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Status of the Fermilab Electron Cooling Project by :
Download or read book Status of the Fermilab Electron Cooling Project written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Electron Lasers written by and published by . This book was released on 1990 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis חוברת לחזרה והעמקה בתורה ומפרשים by :
Download or read book חוברת לחזרה והעמקה בתורה ומפרשים written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Measurements in the Fermilab Electron Cooling Solenoid Prototype by :
Download or read book Field Measurements in the Fermilab Electron Cooling Solenoid Prototype written by and published by . This book was released on 2003 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: To increase the Tevatron luminosity, Fermilab is developing a high-energy electron cooling system [1] to cool 8.9-GeV/c antiprotons in the Recycler ring. The schematic layout of the Recycler Electron Cooling (REC) system is shown in Figure 1. Cooling of antiprotons requires a round electron beam with a small angular spread propagating through a cooling section with a kinetic energy of 4.3 MeV. To confine the electron beam tightly and to keep its transverse angles below 10−4 rad, the cooling section will be immersed into a solenoidal field of 50-150G. As part of the R & D effort, a cooling section prototype consisting of 9 modules (90% of the total length of a future section) was assembled and measured. This paper describes the technique of measuring and adjusting the magnetic field quality in the cooling section and presents preliminary results of solenoid prototype field measurements. The design of the cooling section solenoid is discussed in Chapter 2. Chapter 3 describes details of a dedicated measurement system, capable of measuring small transverse field components, while the system's measurement errors are analyzed in Chapter 4. Chapter 5 contains measured field distributions of individual elements of the cooling section as well as an evaluation of the magnetic shielding efficiency. An algorithm of field adjustments for providing lowest possible electron trajectory perturbations is proposed in Chapter 6; also, this chapter shows the results of our first attempts of implementing the algorithm.
Book Synopsis Multi-gev High Performance Accelerators And Related Technology: Proceedings Of The Xvi Rcnp Osaka International Symposium by : Kichiji Hatanaka
Download or read book Multi-gev High Performance Accelerators And Related Technology: Proceedings Of The Xvi Rcnp Osaka International Symposium written by Kichiji Hatanaka and published by World Scientific. This book was released on 1997-12-18 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the field of circular accelerators and related technology for the sub-GeV to multi-GeV energy region from the viewpoint of realization of high performance, i.e., performance and perspectives of operating multi-GeV accelerators, future projects in the multi-GeV energy region, lattice designs and beam dynamics, electron cooling and stochastic cooling, injection and extraction, beam diagnostics, superconducting and normal magnets, magnet power supplies, RF systems, and internal targets. The contributors include leading accelerator physicists from around the world.
Book Synopsis Survey and Alignment of the Fermilab Electron Cooling System by : Babatunde O'Sheg Oshinowo
Download or read book Survey and Alignment of the Fermilab Electron Cooling System written by Babatunde O'Sheg Oshinowo and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of achieving the Tevatron luminosity of 3 x 10{sup 32} cm{sup -2}s{sup -1} requires Electron Cooling in the Recycler Ring to provide an increased flux of antiprotons. The Fermilab Electron Cooling system has been designed to assist accumulation of antiprotons for the Tevatron collider operations. The installation along with the survey and alignment of the Electron Cooling system in the Recycler Ring were completed in November 2004. The Electron Cooling system was fully commissioned in May 2005 and the first cooling of antiprotons was achieved in July 2005. This paper discusses the alignment methodology employed to survey and align the Electron Cooling system.
Book Synopsis Fermilab R & D Program in Medium Energyelectron Cooling by :
Download or read book Fermilab R & D Program in Medium Energyelectron Cooling written by and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fermilab began an R & D program in medium energy electron cooling in April 1995 with the object of cooling 8 GeV antiprotons in a new 3.3 km permanent magnet storage ring (Recycler) to be built in the same tunnel as the Main Injector (MI). The MI is to be completed in 1998, and it is planned to install the Recycler by the end of 1997 to reduce interference during the final rush of MI installation. Although the Recycler will employ stochastic cooling initially, its potential for contributing an order of magnitude to Tevatron collider luminosity is tied to electron cooling. The short time scale and Fermilab's limited familiarity with low energy electron beams has given rise to a two-phase development plan. The first phase is to build a cooling system based on an electron beam of ≥ 200 mA before year 2000. The second phase of about 3 years is planned to reach electron current of 2 A or more. This report describes the general scheme for high luminosity collider operation as well as the R & D plan and progress to date. 17 refs., 5 figs., 1 tab.
Book Synopsis Fermilab R[ampersand]D Program in Medium Energyelectron Cooling by :
Download or read book Fermilab R[ampersand]D Program in Medium Energyelectron Cooling written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fermilab began an R & D program in medium energy electron cooling in April 1995 with the object of cooling 8 GeV antiprotons in a new 3.3 km permanent magnet storage ring (Recycler) to be built in the same tunnel as the Main Injector (MI). The MI is to be completed in 1998, and it is planned to install the Recycler by the end of 1997 to reduce interference during the final rush of MI installation. Although the Recycler will employ stochastic cooling initially, its potential for contributing an order of magnitude to Tevatron collider luminosity is tied to electron cooling. The short time scale and Fermilab's limited familiarity with low energy electron beams has given rise to a two-phase development plan. The first phase is to build a cooling system based on an electron beam of[ge] 200 mA before year 2000. The second phase of about 3 years is planned to reach electron current of 2 A or more. This report describes the general scheme for high luminosity collider operation as well as the R & D plan and progress to date. 17 refs., 5 figs., 1 tab.
Book Synopsis FERMILAB'S EXPERIENCE WITH A HIGH-ENERGY ELECTRON COOLER. by :
Download or read book FERMILAB'S EXPERIENCE WITH A HIGH-ENERGY ELECTRON COOLER. written by and published by . This book was released on 2013 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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