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Fermilab Main Injector Collimation Systems
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Book Synopsis Fermilab Main Injector Collimation Systems by :
Download or read book Fermilab Main Injector Collimation Systems written by and published by . This book was released on 2009 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fermilab Main Injector is moving toward providing 400 kW of 120 GeV proton beams using slip stacking injection of eleven Booster batches. Loss of 5% of the beam at or near injection energy results in 1.5 kW of beam loss. A collimation system has been implemented to localize this loss with the design emphasis on beam not captured in the accelerating RF buckets. More than 95% of these losses are captured in the collimation region. We will report on the construction, commissioning and operation of this collimation system. Commissioning studies and loss measurement tools will be discussed. Residual radiation monitoring of the Main Injector machine components will be used to demonstrate the effectiveness of these efforts.
Book Synopsis Collimation System for Beam Loss Localization with Slip Stacking Injection in the Fermilab Main Injector by :
Download or read book Collimation System for Beam Loss Localization with Slip Stacking Injection in the Fermilab Main Injector written by and published by . This book was released on 2008 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slip stacking injection for high intensity operation of the Fermilab Main Injector produces a small fraction of beam which is not captured in buckets and accelerated. A collimation system has been implemented with a thin primary collimator to define the momentum aperture at which this beam is lost and four massive secondary collimators to capture the scattered beam. The secondary collimators define tight apertures and thereby capture a fraction of other lost beam. The system was installed in 2007 with commissioning continuing in 2008. The collimation system will be described including simulation, design, installation, and commissioning. Successful operation and operational limitations will be described.
Book Synopsis Collimation System Design for Beam Loss Localization with Slipstacking Injection in the Fermilab Main Injector by :
Download or read book Collimation System Design for Beam Loss Localization with Slipstacking Injection in the Fermilab Main Injector written by and published by . This book was released on 2007 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of modeling with the 3-D STRUCT and MARS15 codes of beam loss localization and related radiation effects are presented for the slipstacking injection to the Fermilab Main Injector. Simulations of proton beam loss are done using multi-turn tracking with realistic accelerator apertures, nonlinear fields in the accelerator magnets and time function of the RF manipulations to explain the results of beam loss measurements. The collimation system consists of one primary and four secondary collimators. It intercepts a beam power of 1.6 kW at a scraping rate of 5% of 5.5E+13 ppp, with a beam loss rate in the ring outside the collimation region of 1 W/m or less. Based on thorough energy deposition and radiation modeling, a corresponding collimator design was developed that satisfies all the radiation and engineering constraints.
Book Synopsis A Dynamic Dispersion Insert in the Fermilab Main Injector for Momentum Collimation by :
Download or read book A Dynamic Dispersion Insert in the Fermilab Main Injector for Momentum Collimation written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fermilab Main Injector (MI) accelerator is designed as a FODO lattice with zero dispersion straight sections. A scheme will be presented that can dynamically alter the dispersion of one of the long straight sections to create a non-zero dispersion straight section suitable for momentum collimation. During the process of slip stacking DC beam is generated which is lost during the first few milliseconds of the ramp. A stationary massive primary collimator/absorber with optional secondary masks could be utilized to isolate beam loss due to uncaptured beam.
Book Synopsis Radiation Shielding for the Main Injector Collimation System by :
Download or read book Radiation Shielding for the Main Injector Collimation System written by and published by . This book was released on 2008 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of Monte Carlo radiation shielding studies performed with the MARS15 code for the Main Injector collimation system at Fermilab are presented and discussed. MAD-to-MARS Beam Line Builder is used to generate realistic extended curvilinear geometry models.
Book Synopsis Fermilab Recycler Collimation System Design by :
Download or read book Fermilab Recycler Collimation System Design written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To provide 700 kW proton beams for neutrino production in the NuMI facility, we employ slip stacking in the Recycler with transfer to the Main Injector for recapture and acceleration. Slip stacking with 12 Booster batches per 1.33 sec cycle of the Main Injector has been implemented and briefly tested while extensive operation with 8 batches and 10 batches per MI cycle has been demonstrated. Operation in this mode since 2013 shows that loss localization is an essential component for long term operation. Beam loss in the Recycler will be localized in a collimation region with design capability for absorbing up to 2 kW of lost protons in a pair of 20-Ton collimators (absorbers). This system will employ a two stage collimation with a thin molybdenum scattering foil to define the bottom edge of both the injected and decelerated-for-slipping beams. Optimization and engineering design of the collimator components and radiation shielding are based on comprehensive MARS15 simulations predicting high collimation efficiency as well as tolerable levels of prompt and residual radiation. The system installation during the Fermilab 2016 facility shutdown will permit commissioning in the subsequent operating period.
Book Synopsis Beam Loss, Residual Radiation, and Collimation and Shielding in the Fermilab Booster by :
Download or read book Beam Loss, Residual Radiation, and Collimation and Shielding in the Fermilab Booster written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During its 30 years of operation, the Fermilab Booster has served only as an injector for the relatively low repetition rate proton accelerator complex. With the construction of an 8 GeV target station for the 5 Hz MiniBooNE neutrino beam and rapid multi-batch injection into the Main Injector for the NuMI experiment, the demand for Booster protons will increase dramatically over the next few years. This implies serious constraints on beam losses in the machine. A collimation system and shielding design based on realistic Monte Carlo simulations are presented. A two-stage beam collimation system with local shielding has been designed. It provides adequate protection of the Booster components and environment by localizing operational losses. This loss control is a key to the entire future Fermilab high energy physics program.
Book Synopsis Energy Deposition Issues at 8 GeV H- Beam Collimation and Injection to the Fermilab Main Injector by : N. V. Mokhov
Download or read book Energy Deposition Issues at 8 GeV H- Beam Collimation and Injection to the Fermilab Main Injector written by N. V. Mokhov and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The energy deposition and radiation issues at 8 GeV h{sup -} beam collimation in the beam transfer line and at stripping injection to the Fermilab Main Injector (MI) are analyzed. Detailed calculations with the STRUCT [1] and MARS15 [2] codes are performed on heating of collimators and stripping foils, as well as on accelerator elements radioactivation at normal operation. Extraction of the unstripped part of the beam to the external beam dump and loss of the excited-state H{sup 0} atoms in MI are also studied.
Book Synopsis Simulation of Hollow Electron Beam Collimation in the Fermilab Tevatron Collider by :
Download or read book Simulation of Hollow Electron Beam Collimation in the Fermilab Tevatron Collider written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of augmenting the conventional collimation system of high-energy storage rings with a hollow electron beam was successfully demonstrated in experiments at the Tevatron. A reliable numerical model is required for understanding particle dynamics in the presence of a hollow beam collimator. Several models were developed to describe imperfections of the electron beam profile and alignment. The features of the imperfections are estimated from electron beam profile measurements. Numerical simulations of halo removal rates are compared with experimental data taken at the Tevatron.
Book Synopsis Beam Collimation System for a 16 GeV Proton Driver by :
Download or read book Beam Collimation System for a 16 GeV Proton Driver written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is shown that with the appropriate lattice and collimation design, one can control beam loss in the 16 GeV Fermilab Proton Driver. Based on detailed Monte-Carlo simulations, a 3-stage collimation system is proposed which consists of primary, secondary and supplementary collimators located in a special 60 m long injection section along with a painting system. It allows localization of more than 99% of beam loss to this section with only a 0.3 W/m (on average) beam loss rate in the rest of the machine. As a result, beam loss and induced radiation effects in lattice elements can be reduced to levels which are defined as acceptable.
Book Synopsis Fermilab Booster Beam Collimation and Shielding by :
Download or read book Fermilab Booster Beam Collimation and Shielding written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The beam power in the upgraded Booster at 8 GeV and 10 Hz will be 64 kW. Beam loss can result in high radiation loads in the ring. The purpose of a new beam halo cleaning system is to localize proton losses in specially shielded regions. Calculations show that this 2-stage collimation system will localize about 99% of beam loss in straight sections 6 and 7 and immediately downstream. Beam loss in the rest of the machine will be on average 0.1W/m. Local shielding will provide tolerable prompt and residual radiation levels in the tunnel, above the tunnel at the surface and in the sump water. Results of thorough MARS calculations are presented for a new design which includes shielding integrated with the collimators, motors and controls ensuring a high performance and facilitating maintenance. First measurements of the collimation efficiency are presented.
Book Synopsis Theory and Design of Charged Particle Beams by : Martin Reiser
Download or read book Theory and Design of Charged Particle Beams written by Martin Reiser and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although particle accelerators are the book's main thrust, it offers a broad synoptic description of beams which applies to a wide range of other devices such as low-energy focusing and transport systems and high-power microwave sources. Develops material from first principles, basic equations and theorems in a systematic way. Assumptions and approximations are clearly indicated. Discusses underlying physics and validity of theoretical relationships, design formulas and scaling laws. Features a significant amount of recent work including image effects and the Boltzmann line charge density profiles in bunched beams.
Download or read book The Fermilab Main Injector written by and published by . This book was released on 1992 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fermilab Main Injector is a new 150 GeV proton synchrotron, designed to replace the Main Ring and improve the high energy physics potential of Fermilab. The status of the Fermilab accelerator complex upgrade will be discussed.
Book Synopsis Selective Resonant Extraction from the Fermilab Main Injector Using Electron Lens by :
Download or read book Selective Resonant Extraction from the Fermilab Main Injector Using Electron Lens written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose to use an electron lens for slow extraction of proton bunches from the Fermilab Main Injector. Negatively charged electron beam colliding with protons causes positive tune shift proportional to the electron current. If the resulting tune satisfies resonance condition, protons move to larger betatron amplitudes as in conventional slow extraction systems. Time variation of the electron current allows slow extraction from particular batches or even slow extraction from a single bunch.
Book Synopsis Challenges to the Fermilab Linac and Booster Accelerators by :
Download or read book Challenges to the Fermilab Linac and Booster Accelerators written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A report on the challenges confronting the Fermilab Linac and Booster accelerators is presented. Plans to face those challenges are discussed. Historically, the Linac/Booster system has served only as an injector for the relatively low repetition rate Main Ring synchrotron. With construction of an 8 GeV target station for the 5 Hz MiniBooNE neutrino beam and requirements for rapid multi-batch injection into the Main Injector for the NUMI/MINOS experiment, the demand for 8 GeV protons will increase more than an order of magnitude above recent high levels. To meet this challenge, enhanced ion source performance, better Booster orbit control, a beam loss collimation/localization system, and improved diagnostics are among the items being pursued. Booster beam loss reduction and control are key to the entire near future Fermilab high energy physics program.
Book Synopsis Status of the Fermilab Main Injector by :
Download or read book Status of the Fermilab Main Injector written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fermilab Main Injector is a rapid cycling proton synchrotron. It is designed to accelerate protons and antiprotons to 150GeV. The initial commissioning phase was in the summer of 1999. Since then, Main Injector has been supporting the high energy physics program at Fermilab. Beam studies for continued improvements in machine performance are in progress, in order to support a luminosity of 8*1031 cm−2 sec−1 during Run IIa. The status of the Main Injector and beam studies results are presented.
Book Synopsis Fermilab Main Injector Beam Position Monitor Upgrade by : M. Olson
Download or read book Fermilab Main Injector Beam Position Monitor Upgrade written by M. Olson and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upgrade of the Beam Position Monitor (BPM) signal processing and data acquisition system for the Fermilab Main Injector is described. The Main Injector is a fast cycling synchrotron that accelerates protons or antiprotons from 8 to 150 GeV. Each Main Injector cycle can have a totally different magnet ramp, RF frequency configuration, beam bunch structure, and injection/extraction pattern from the previous cycle. The new BPM system provides the capabilities and flexibility required by the dynamic and complex machine operations. The system offers measurement capability in the 2.5 MHz and 53 MHz channels to detect the range of bunch structures for protons and antiprotons in both wideband (turn-by-turn) and narrowband (closed-orbit) modes. The new BPM read-out system is based on the digital receiver concept and is highly configurable, allowing the signal processing of nearly all Main Injector beam conditions, including the detection of individual batches. An overview of the BPM system in the Main Injector operating environment, some technology details and first beam measurements are presented.
