A5024670562- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Advancements in PLL and VCO Technologies
- Advanced Data Storage Technologies
- Electrostatic Discharge in Electronics
- Optical Systems and Laser Technology
- Adaptive optics and wavefront sensing
- Advanced Optical Sensing Technologies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Embedded Systems Design Techniques
- Laser Design and Applications
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Parallel Computing and Optimization Techniques
- Electromagnetic Compatibility and Noise Suppression
- Gyrotron and Vacuum Electronics Research
Fermi National Accelerator Laboratory
2002-2018
Fermi Research Alliance
2007
SLAC National Accelerator Laboratory
2005
We describe the design, construction, and performance of Sloan Digital Sky Survey Telescope located at Apache Point Observatory. The telescope is a modified two-corrector Ritchey-Chretien design which has 2.5-m, f/2.25 primary, 1.08-m secondary, Gascoigne astigmatism corrector, one pair interchangeable highly aspheric correctors near focal plane, for imaging other spectroscopy. final ratio f/5. instrumented by wide-area, multiband CCD camera fiber-fed double spectrographs. Novel features...
We present an ambitious ongoing project to build and install a new corrector system in the Fermilab 8 GeV booster. The consists of 48 packages, each containing horizontal vertical dipoles, normal skew quadrupoles, sextupoles. Space limitations machine have motivated unique design, which utilizes custom wound coils around 12 pole laminated core. Each 288 discrete multipole elements will dedicated power supply, output current is controlled by individual programmable ramp. This paper describes...
To better control the beam position, tune, and chromaticity in Fermilab Booster synchrotron, a new package of six corrector elements has been designed, incorporating both normal skew orientations dipole, quadrupole, sextupole magnets. The devices are under construction installation at 48 locations is planned. density rapid slew rate have posed special challenges. magnet presented along with DC measurements magnetic field.
To better control the beam position, tune, and chromaticity in Fermilab Booster synchrotron, a new package of six corrector elements has been designed, incorporating both normal skew orientations dipole, quadrupole, sextupole magnets. The devices are under construction will be installed 48 locations accelerator. Each these 288 magnets individually powered. controlled using operator programmed current ramps designed specifically for each type acceleration cycle. This paper provides an...
A new digitizing and data acquisition system for the beam loss monitors is being developed use in several accelerators of Fermilab complex. In addition to providing diagnostic information about loss, monitor designed provide a primary protection against damage superconducting magnets Tevatron. Protecting Tevatron over full set collider operating conditions requires abort logic thresholds be flexible reconfigurable quickly from stored settings. digitizer card core component system. It...
A VME-based data acquisition system for beam-loss monitors has been developed and is in use the Tevatron Main Injector accelerators at Fermilab complex. The need enhanced protection when operating collider-mode was main driving force new design. Prior to implementation of present system, monitor disabled during collider operation magnets relied on quench system. Beam-Loss Monitor allows appropriate abort logic thresholds be set over full conditions. also records a history prior beam-abort...
The development of magnetic cogging is part the Fermilab Booster upgrade within Proton Improvement Plan (PIP). going to send 2.25E17 protons/hour which almost double present flux, 1.4E17 Main Injector (MI) and Recycler (RR). extraction kicker gap has synchronize MI RR injection bucket in order avoid a beam loss at rising edge kickers. Magnetic able control revolution frequency position using field from dipole correctors while radial feedback keeps central orbit. new expected reduce due orbit...
The CDF Shower Maximum Electronics is part of the upgraded data acquisition system for experiment at Fermilab. services five detector subsystems calorimeter, and accommodates different properties processing requirements imposed by each them. electronics built around a custom integrated circuit called SMQIE, which produces floating-point with no dead-time using 7.6-MHz clock. components are described, along principles operation performing acquisition, calibration, diagnostics.
In the Fermilab beam loss monitor system, inputs from ion chambers are integrated for a short period of time, digitized and processed to create accelerator abort request signals. The power supplies employing 3-phase 60 Hz AC cause noise at various harmonics on our which must be eliminated monitoring purposes. During ramping, both sampling frequency amplitudes components change. As such, traditional digital filtering can partially reduce certain but not all. A non-traditional algorithm was...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A new package of six corrector elements has been designed to better control the beam position, tune, and chromaticity in Fermilab Booster synchrotron. It incorporates both normal skew orientations dipole, quadrupole, sextupole magnets. These magnets will be installed ring place old style elements. severe space restriction rapid slew rate have posed special challenges. The magnet design,...
The Fermilab booster has an intensity upgrade plan called the Proton Improvement (PIP). flux throughput goal is 2E17 protons/hour which almost double current operation at 1.1E17 protons/hour. beam loss in machine going to be issue. accelerates from 400 MeV 8GeV and extracts Main Injector (MI). Cogging process that synchronizes extraction kicker gap MI by changing radial position of during cycle. creation occurs about 700MeV 6msec into variation revolution frequency cycle larger lower energy...
The extraction bucket position in the Fermilab Booster is controlled with a cogging process that involves comparison of RF count and Recycler Ring revolution marker. A one jitter results from variability phase matches to Recycler. However, new slow lock used frequency has been made digital programmable modified correct notch position. beam loss at injection reduced by 20%. Beam studies system will be discussed this paper.
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Hengjie Ma, Craig Drennan; Position monitoring of low intensity beams using a digital frequency down converter. AIP Conf. Proc. 5 May 1995; 333 (1): 349–355. https://doi.org/10.1063/1.48061 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar...