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Bubbles may form when imaging liquids with in situ liquid-cell electron microscopy. Fluid dynamics videos show beam-induced bubble nucleation and growth. By examining the bubble formation and growth process, we hope to gain a better…

Fluid Dynamics · Physics 2012-10-15 Joseph M. Grogan , Frances M. Ross , Haim H. Bau

Fermilab is planning the construction of a prototype front end of the Project X linac. The Project X Injector Experiment (PXIE) is expected to accelerate 1 mA cw H- beam up to 30 MeV. Some of the major goals of the project are to test a cw…

Accelerator Physics · Physics 2013-01-30 V. A. Lebedev , A. V. Shemyakin , J. Steimel , M. Wendt , B. M. Hanna , L. R. Prost , V. E. Scarpine

The uncertainty in the initial neutrino flux is the main limitation for a precise determination of the absolute neutrino cross section. The ERC funded ENUBET project (2016-2021) is studying a facility based on a narrow band beam to produce…

The ability to spatially modulate the electronic properties of solids has led to landmark discoveries in condensed matter physics as well as new electronic applications. Although crystals of strongly correlated metals exhibit a diverse set…

The beam transport experiments in toroidal magnets were first described in EPAC08 [1] within the framework of a proposed low energy ion storage ring at Frankfurt University. The experiments with two room temperature 30 degree toroids are…

Accelerator Physics · Physics 2016-06-16 N. Joshi , M. Droba , O. Meusel , H. Niebuhr , U. Ratzinger

The Minos+ experiment is an extension of the Minos experiment at a higher energy and more intense neutrino beam, with the data collection having begun in the fall of 2013. The neutrino beam is provided by the Neutrinos from the Main…

Instrumentation and Detectors · Physics 2016-11-17 William Badgett , Steve R. Hahn , Donatella Torretta , Jerry Meier , Jeffrey Gunderson , Denise Osterholm , David Saranen

From 2005 through 2012, the Fermilab Main Injector provided intense beams of 120 GeV protons to produce neutrino beams and antiprotons. Hardware improvements in conjunction with improved diagnostics allowed the system to reach sustained…

Accelerator Physics · Physics 2013-02-01 Bruce C. Brown

We report a study of muon neutrino charged-current quasi-elastic events in the segmented scintillator inner tracker of the MINERvA experiment running in the NuMI neutrino beam at Fermilab. The events were selected by requiring a {\mu}^- and…

High Energy Physics - Experiment · Physics 2014-11-25 The MINERvA collaboration , G. A. Fiorentini , D. W. Schmitz , P. A. Rodrigues , L. Aliaga , O. Altinok , B. Baldin , A. Baumbaugh , A. Bodek , D. Boehnlein , S. Boyd , R. Bradford , W. K. Brooks , H. Budd , A. Butkevich , D. A. Martinez Caicedo , C. M. Castromonte , M. E. Christy , H. Chung , J. Chvojka , M. Clark , H. da Motta , D. S. Damiani , I. Danko , M. Datta , M. Day , R. DeMaat , J. Devan , E. Draeger , S. A. Dytman , G. A. Díaz , B. Eberly , D. A. Edmondson , J. Felix , T. Fitzpatrick , L. Fields , A. M. Gago , H. Gallagher , C. A. George , J. A. Gielata , C. Gingu , B. Gobbi , R. Gran , N. Grossman , J. Hanson , D. A. Harris , J. Heaton , A. Higuera , I. J. Howley , K. Hurtado , M. Jerkins , T. Kafka , J. Kaisen , M. O. Kanter , C. E. Keppel , J. Kilmer , M. Kordosky , A. H. Krajeski , S. A. Kulagin , T. Le , H. Lee , A. G. Leister , G. Locke , G. Maggi , E. Maher , S. Manly , W. A. Mann , C. M. Marshall , K. S. McFarland , C. L. McGivern , A. M. McGowan , A. Mislivec , J. G. Morfń , J. Mousseau , D. Naples , J. K. Nelson , G. Niculescu , I. Niculescu , N. Ochoa , C. D. O'Connor , J. Olsen , B. Osmanov , J. Osta , J. L. Palomino , V. Paolone , J. Park , C. E. Patrick , G. N. Perdue , C. Peña , L. Rakotondravohitra , R. D. Ransome , H. Ray , L. Ren , C. Rude , K. E. Sassin , H. Schellman , R. M. Schneider , E. C. Schulte , C. Simon , F. D. Snider , M. C. Snyder , J. T. Sobczyk , C. J. Solano Salinas , N. Tagg , W. Tan , B. G. Tice , G. Tzanakos , J. P. Velásquez , J. Walding , T. Walton , J. Wolcott , B. A. Wolthuis , N. Woodward , G. Zavala , H. B. Zeng , D. Zhang , L. Y. Zhu , B. P. Ziemer

A prototype for the instrumented decay tunnel of ENUBET was tested in 2018 at the CERN East Area facility with charged particles up to 5 GeV. This detector is a longitudinal sampling calorimeter with lateral scintillation light readout. The…

The use of transverse electric (TE) waves has proved to be a powerful, noninvasive method for estimating the densities of electron clouds formed in particle accelerators. Results from the plasma simulation program VORPAL have been a useful…

Accelerator Physics · Physics 2015-06-18 Kiran G. Sonnad , Kenneth Hammond , Robert Schwartz , Seth Veitzer

The Main Injector is a new rapid cycling accelerator at Fermilab which is a source of protons to be used in antiproton production to enhance the luminosity of the Tevatron Collider and to provide extracted beams for use in a range of fixed…

High Energy Physics - Experiment · Physics 2007-05-23 Hugh E. Montgomery

The buildup of low energy electrons in an accelerator, known as electron cloud, can be severely detrimental to machine performance. Under certain beam conditions, the beam can become resonant with the cloud dynamics, accelerating the…

Accelerator Physics · Physics 2016-08-03 J. R. Calvey , W. Hartung , J. Makita , M. Venturini

The potentially realizable beam power at the Fermilab long-baseline neutrino program has motivated a reinvigorated design and optimization effort for a rapid-cycling synchrotron (RCS) intensity upgrade of the Fermilab proton complex. We…

Accelerator Physics · Physics 2020-01-17 Jeffrey Eldred

Fermilab is committed to upgrade its accelerator complex to support HEP experiments at the intensity frontier. The ongoing Proton Improvement Plan (PIP) enables us to reach 700 kW beam power on the NuMI neutrino targets. By the end of the…

Accelerator Physics · Physics 2017-04-27 C. M. Bhat

We study the nature of the electronic states in the intermediate band formed by interstitial titanium in silicon. Our single-site description combines effects of electronic correlations, captured by dynamical mean-field theory, and…

Strongly Correlated Electrons · Physics 2021-11-17 A. Östlin , L. Chioncel

The presence of strong electron clouds in the quadrupole magnetic field regions of the Large Hadron Collider (LHC) leads to considerable heating that poses challenges for the cryogenic cooling system, and under certain conditions to proton…

A series of beam dynamic studies were performed in 2020-2021 at the PIP-II Injector Test Facility (PIP2IT) that has been built to validate the concept of the front-end of the PIP-II linac being constructed at Fermilab. PIP2IT is comprised…

Accelerator Physics · Physics 2022-08-26 J. -P. Carneiro , B. Hanna , E. Podzeyev , L. Prost , A. Saini , A. Shemyakin

We report on extensive measurements at the Cornell Electron-positron Storage Ring of electron-cloud-induced betatron tune shifts for trains of positron bunches at 2.1 and 5.3 GeV with bunch populations ranging between 0.64x10^10 and…

Accelerator Physics · Physics 2019-08-06 Stephen Poprocki , Sean Buechele , James Crittenden , Keefer Rowan , David Rubin , John San Soucie

The detailed design and operation of the Smithsonian Astrophysical Observatory's EBIT are described for the first time, including recent design upgrades that have led to improved system stability and greater user control, increasing the…

Instrumentation and Methods for Astrophysics · Physics 2024-01-25 A. C. Gall , A. Foster , Y. Yang , E. Takacs , N. S. Brickhouse , E. Silver , R. K. Smith

The Proton Improvement Plan-II (PIP-II) [1] has been developed at Fermilab to provide powerful proton beams to the laboratorys experiments. An 800-MeV superconducting linear accelerator-a centerpiece of the project-is currently under…

Accelerator Physics · Physics 2023-01-23 Igor Rakhno , Nikolai Mokhov , Igor Tropin , Sergei Striganov , Yury Eidelman