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75 papers · 2 filters
Online measurement of the energy spread of multi-turn beam in the Fermilab Booster at injection
J. Nelson, C. M. Bhat, B. S. Hendricks
We have developed a computer program interfaced with the ACNET environment of Fermilab accelerators to measure energy spread of the proton beam from the LINAC at an injection into…
Progress on the design of a perpendicularly biased 2nd harmonic cavity for the Fermilab Booster
R. L. Madrak, J. E. Dey, K. L. Duel +8
A perpendicularly biased 2nd harmonic cavity is being designed and built for the Fermilab Booster. Its purpose is to flatten the bucket at injection and thus change the longitudina…
Initial observations of micropulse elongation of electron beams in a SCRF accelerator
A. H. Lumpkin, R. Thurman-Keup, D. Edstrom +2
Commissioning at the SCRF accelerator at the Fermilab Accelerator Science and Technology (FAST) Facility has included the implementation of a versatile bunch-length monitor located…
An Adiabatic Phase-Matching Accelerator
Francois Lemery, Klaus Floettmann, Philippe Piot +2
We present a general concept to accelerate non-relativistic charged particles. Our concept employs an adiabatically-tapered dielectric-lined waveguide which supports accelerating p…
Radiation damage and thermal shock response of carbon-fiber-reinforced materials to intense high-energy proton beams
N. Simos, Z. Zhong, S. Ghose +14
A comprehensive study on the effects of energetic protons on carbon-fiber composites and compounds under consideration for use as low-Z pion production targets in future high-power…
Experimental studies of 7-cell dual axis asymmetric cavity for energy recovery linac
I. V. Konoplev, K. Metodiev, A. J. Lancaster +3
High average current, transportable energy recovery linacs (ERLs) can be very attractive tools for a number of applications including next generation high-luminosity, compact light…
Initial Demonstration Of 9-MHz Framing Camera Rates On The FAST Drive Laser Pulse Trains
A. H. Lumpkin, D. Edstrom, J. Ruan
We report the configuration of a Hamamatsu C5680 streak camera as a framing camera to record transverse spatial information of green-component laser micropulses at 3- and 9-MHz rat…
Measurements and calculations of air activation in the NuMI neutrino production facility at Fermilab with the 120-GeV proton beam on target
I. L. Rakhno, J. Hylen, P. Kasper +4
Measurements and calculations of the air activation at a high-energy proton accelerator are described. The quantity of radionuclides released outdoors depends on operation scenario…
Front End for a Neutrino Factory or Muon Collider
David Neuffer, Pavel Snopok, Yuri Alexahin
A neutrino factory or muon collider requires the capture and cooling of a large number of muons. Scenarios for capture, bunching, phase-energy rotation and initial cooling of μ's p…
Wave-Optics Modeling of the Optical-Transport Line for Passive Optical Stochastic Cooling
M. B. Andorf, V. A. Lebedev, P. Piot +1
Optical stochastic cooling (OSC) is expected to enable fast cooling of dense particle beams. Transition from microwave to optical frequencies enables an achievement of stochastic c…
Frequency dependence of trapped flux sensitivity in SRF cavities
Mattia Checchin, Martina Martinello, Anna Grassellino +6
In this letter, we present the frequency dependence of the vortex surface resistance of bulk niobium accelerating cavities as a function of different state-of-the-art surface treat…
TMCI and Space Charge II
Timofey Zolkin, Alexey Burov, Bipul Pandey
Transverse mode-coupling instability (TMCI) is known to limit bunch intensity. Since space charge (SC) changes coherent spectra, it affects the TMCI threshold. Generally, there are…
Beam Based RF Voltage Measurements and Longitudinal Beam Tomography at the Fermilab Booster
C. M. Bhat, S. Bhat
Increasing proton beam power on neutrino production targets is one of the major goals of the Fermilab long term accelerator programs. In this effort, the Fermilab 8 GeV Booster syn…
Novel Application of Density Estimation Techniques in Muon Ionization Cooling Experiment
Tanaz Angelina Mohayai, Pavel Snopok, David Neuffer +1
The international Muon Ionization Cooling Experiment (MICE) aims to demonstrate muon beam ionization cooling for the first time and constitutes a key part of the R&D towards a futu…
Mu2e upgrade physics reach optimization studies for the PIP-II era
V. Pronskikh, D. Glenzinski, N. Mokhov +1
The Mu2e experiment at Fermilab is being designed to study the coherent neutrino-less conversion of a negative muon into an electron in the field of a nucleus. This process has an…
The Experimental Program for High Pressure Gas Filled Radio Frequency Cavities for Muon Cooling Channels
Ben Freemire, Moses Chung, Pierrick M. Hanlet +4
An intense beam of muons is needed to provide a luminosity on the order of 10 cms for a multi-TeV collider. Because muons produced by colliding a multi-MW prot…
Nonlinear theory of transverse beam echoes
Tanaji Sen, Yuan Shen Li
Transverse beam echoes can be excited with a single dipole kick followed by a single quadrupole kick. They have been used to measure diffusion in hadron beams and have other diagno…
Simulated performance of the production target for the Muon g-2 Experiment
D. Stratakis, M. Convery, J. P. Morgan +3
The Muon g-2 Experiment plans to use the Fermilab Recycler Ring for forming the proton bunches that hit its production target. The proposed scheme uses one RF system, 80 kV of 2.5…
Static Magnetization Properties Of AL800 Garnet Material
J. Kuharik, R. Madrak, A. Makarov +4
A second harmonic tunable RF cavity is being developed for the Fermilab Booster. This device, which promises reduction of the particle beam loss at the injection, transition, and e…
Injection Bucket Jitter Compensation Using Phase Lock System At Fermilab Booster
K. Seiya, C. Drennan, W. Pellico +1
The extraction bucket position in the Fermilab Booster is controlled with a cogging process that involves the comparison of the Booster RF count and the Recycler Ring revolution ma…
Instrumentation and its Interaction with the Secondary Beam for the Fermilab Muon Campus
D. Stratakis, B. Drendel, M. J. Syphers
The Fermilab Muon Campus will host the Muon g-2 experiment - a world class experiment dedicated to the search for signals of new physics. Strict demands are placed on beam diagnost…
Phase-Space Analysis Using Tomography For The Muon G-2 Experiment At Fermilab
D. Stratakis
In the next decade the Fermilab Muon Campus will host two world class experiments dedicated to the search for signals of new physics. The Muon g-2 experiment will determine with un…
RF system for the MICE demonstration of ionization cooling
K. Ronald, C. G. Whyte, A. J. Dick +29
Muon accelerators offer an attractive option for a range of future particle physics experiments. They can enable high energy (TeV+) high energy lepton colliders whilst mitigating t…
First Indirect X-Ray Imaging Tests With An 88-mm Diameter Single Crystal
A. H. Lumpkin, A. T. Macrander
Using the 1-BM-C beamline at the Advanced Photon Source (APS), we have performed the initial indirect x-ray imaging point-spread-function (PSF) test of a unique 88-mm diameter YAG:…