A. Ladran

COMPACT, TUNABLE COMPTON SCATTERING GAMMA-RAY SOURCES

F. V. Hartemann, F. Albert, G. G. Anderson, S. G. Anderson et autres

Recent progress in accelerator physics and laser technology have enabled the development of a new class of gamma-ray light sources based on Compton scattering between a high-brightness, relativistic electron beam and a high intensity laser pulse produced via chirped-pulse amplification (CPA). A …

DEVELOPMENT OF A PRECISION TUNABLE GAMMA-RAY SOURCE DRIVEN BY A COMPACT X-BAND LINAC

F. V. Hartemann, F. Albert, G. G. Anderson, S. G. Anderson et autres

A precision, tunable gamma-ray source driven by a compact, high-gradient X-band linac is currently under development at LLNL. High-brightness, relativistic electron bunches produced by the linac interact with a Joule-class, 10 ps laser pulse to generate tunable {gamma}-rays in the 0.5-2.5 MeV …

The magnetized steel and scintillator calorimeters of the MINOS experiment

D. G. Michael, P. Adamson, T. Alexopoulos, W.W.M. Allison et autres

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Observation of Muon Neutrino Disappearance with the MINOS Detectors in the NuMI Neutrino Beam

D. G. Michael, P. Adamson, T. Alexopoulos, W.W.M. Allison et autres

This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ interactions are compared in two detectors located along the beam axis at distances …

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First observations of separated atmospheric νμ and ν¯μ events in the MINOS detector

P. Adamson, T. Alexopoulos, W.W.M. Allison, G.J. Alner et autres

The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ and ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ charged-current atmospheric …

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First observations of separated atmospheric nu(mu) and (nu)over-bar(mu) events in the MINOS detector

P. Adamson, T. Alexopoulos, W.W.H. Allison, G.J. Alner et autres

The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of nu(mu) and (nu) over bar …

A 201 MHz RF cavity design with non-stressed pre-curved be windows for muon cooling channels

Derun Li, A. Ladran, J. Staples, Steve Virostek et autres

We present a 201-MHz RF cavity design for muon cooling channels with non-stressed and pre-curved Be foils to terminate the beam apertures. The Be foils are necessary to improve the cavity shunt impedance with large beam apertures needed for accommodating large transverse …

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Analysis of a grid window structure for RF cavities in a muon cooling channel

A. Ladran, D. Li, A. Moretti, Robert Rimmer et autres

We report on the electromagnetic and thermal analysis of a grid window structure for high gradient, low frequency RF cavities. Windows may be utilized to close the beam iris and increase shunt impedance of closed-cell RF cavities. This work complements previous work …

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805 MHz and 201 MHz RF cavity development for MUCOOL

Derun Li, J. Corlett, A. Ladran, R.A. MacGill et autres

A muon cooling channel calls for very high accelerating gradient RF structures to restore the energy lost by muons in the absorbers. The RF structures have to be operated in a strong magnetic field and thus the use of superconducting RF cavities …

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Analysis of a grid window structure for RF cavities in a Muon cooling channel - eScholarship

A. Ladran, D. Li, A. Moretti, Robert Rimmer et autres

We report on the electromagnetic and thermal analysis of a grid window structure for high gradient, low frequency RF cavities. Windows may be utilized to close the beam iris and increase shunt impedance of closed-cell RF cavities. This work complements previous work …

The Scrounge-atron: a phased approach to the Advanced Hydrotest Facility utilizing proton radiography

O Alford, P. D. Barnes, A.K. Chargin, W.D. Dekin et autres

The Department of Energy has initiated its Stockpile Stewardship and Management Program (SSMP) to provide a single, integrated technical program for maintaining the continued safety and reliability of the nation's nuclear weapons stockpile in the absence of nuclear testing. Consistent with the …

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High-gradient normal-conducting RF structures for muon cooling channels

J. Corlett, Green Green, N. M. Hartman, A. Ladran et autres

We present a status report on the research and development of high-gradient normal-conducting RF structures for the ionization cooling of rations in a neutrino factory or muon collider. High-gradient RF structures are required in regions enclosed in strong focussing solenoidal magnets, precluding …

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