Degree Department

481 Matching Results

Results open in a new window/tab.

1.5-GEV FFAG ACCELERATOR AS INJECTOR TO THE BNL-AGS. (open access)

1.5-GEV FFAG ACCELERATOR AS INJECTOR TO THE BNL-AGS.

A 1.5-GeV Fixed-Field Alternating-Gradient (FFAG) proton Accelerator is being studied as a new injector to the Alternating-Gradient Synchrotron (AGS) of Brookhaven National Laboratory (BNL). The major benefit is that it would considerably shorten the overall AGS acceleration cycle, and, consequently, may yield to an improvement of beam stability, intensity and size. The AGS-FFAG will also facilitate the proposed upgrade of the AGS facility toward a 1-MW average proton beam power at the top energy of 28 GeV. This paper describes the FFAG design for acceleration of protons from 400 MeV to 1.5 GeV, with the same circumference of the AGS, and entirely housed in the AGS tunnel.
Date: July 5, 2004
Creator: Ruggiero, A. G.; Blaskiewicz, M.; Trbojevic, D.; Tsoupas, N. & Zhang, W.
Object Type: Article
System: The UNT Digital Library
A 30 ps Timing Resolution for Single Photons with Multi-pixel Burle MCP-PMT (open access)

A 30 ps Timing Resolution for Single Photons with Multi-pixel Burle MCP-PMT

We have achieved {approx}30 psec single-photoelectron and {approx}12ps for multi-photoelectron timing resolution with a new 64 pixel Burle MCP-PMT with 10 micron microchannel holes. We have also demonstrated that this detector works in a magnetic field of 15kG, and achieved a single-photoelectron timing resolution of better than 60 psec. The study is relevant for a new focusing DIRC RICH detector for particle identification at future Colliders such as the super B-factory or ILC, and for future TOF techniques. This study shows that a highly pixilated MCP-PMT can deliver excellent timing resolution.
Date: July 5, 2006
Creator: Va'vra, J.; Benitez, J.; Coleman, J.; Leith, D. W. G. S.; Mazaheri, G.; Ratcliff, B. et al.
Object Type: Article
System: The UNT Digital Library
A 568 page petition signed by approximately 10,458 American Citizens that live in the Great State of Ohio (open access)

A 568 page petition signed by approximately 10,458 American Citizens that live in the Great State of Ohio

A 568 page petition signed by approximately 10,458 American Citizens that live in the Great State of Ohio consisting of their printed name, county of residence, and their signature. The petition states they are opposed to the B.R.A.C (Base Realignment and Closure) Act that proposes to close the 179AW Mansfield, Ohio.
Date: July 5, 2005
Creator: unknown
Object Type: Legal Document
System: The UNT Digital Library
ACCELERATION OF POLARIZED BEAMS USING MULTIPLE STRONG PARTIAL SIBERIAN SNAKES. (open access)

ACCELERATION OF POLARIZED BEAMS USING MULTIPLE STRONG PARTIAL SIBERIAN SNAKES.

Acceleration of polarized protons in the energy range of 5 to 25 GeV is particularly difficult since depolarizing spin resonances are strong enough to cause significant depolarization but full Siberian snakes cause intolerably large orbit excursions. Using a 20-30% partial Siberian snake both imperfection and intrinsic resonances can be overcome. Such a strong partial Siberian snake was designed for the Brookhaven AGS using a dual pitch helical superconducting dipole. Multiple strong partial snakes are also discussed for spin matching at beam injection and extraction.
Date: July 5, 2004
Creator: ROSER,T. AHRENS,L. BAI,M. ET AL.
Object Type: Article
System: The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 126, No. 6, Ed. 1 Thursday, July 5, 2001 (open access)

The Albany News (Albany, Tex.), Vol. 126, No. 6, Ed. 1 Thursday, July 5, 2001

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: July 5, 2001
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 132, No. 6, Ed. 1 Thursday, July 5, 2007 (open access)

The Albany News (Albany, Tex.), Vol. 132, No. 6, Ed. 1 Thursday, July 5, 2007

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: July 5, 2007
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD (open access)

All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD

We use on-shell recursion relations to compute analytically the one-loop corrections to maximally-helicity-violating n-gluon amplitudes in QCD. The cut-containing parts have been computed previously; our work supplies the remaining rational parts for these amplitudes, which contain two gluons of negative helicity and the rest positive, in an arbitrary color ordering. We also present formulae specific to the six-gluon cases, with helicities (-+-+++) and (-++-++), as well as numerical results for six, seven, and eight gluons. Our construction of the n-gluon amplitudes illustrates the relatively modest growth in complexity of the on-shell-recursive calculation as the number of external legs increases. These amplitudes add to the growing body of one-loop amplitudes known for all n, which are useful for studies of general properties of amplitudes, including their twistor-space structure.
Date: July 5, 2006
Creator: Berger, Carola F.; Bern, Zvi; Dixon, Lance J.; Forde, Darren & Kosower, David A.
Object Type: Report
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 97, Ed. 1 Wednesday, July 5, 2000 (open access)

Altus Times (Altus, Okla.), Vol. 101, No. 97, Ed. 1 Wednesday, July 5, 2000

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2000
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 97, Ed. 1 Thursday, July 5, 2001 (open access)

Altus Times (Altus, Okla.), Vol. 102, No. 97, Ed. 1 Thursday, July 5, 2001

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2001
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 95, Ed. 1 Friday, July 5, 2002 (open access)

Altus Times (Altus, Okla.), Vol. 104, No. 95, Ed. 1 Friday, July 5, 2002

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2002
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 82, Ed. 1 Monday, July 5, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 82, Ed. 1 Monday, July 5, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 80, Ed. 1 Tuesday, July 5, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 107, No. 80, Ed. 1 Tuesday, July 5, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 108, No. 82, Ed. 1 Wednesday, July 5, 2006 (open access)

Altus Times (Altus, Okla.), Vol. 108, No. 82, Ed. 1 Wednesday, July 5, 2006

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2006
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 30, Ed. 1 Thursday, July 5, 2007 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 30, Ed. 1 Thursday, July 5, 2007

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2007
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 111, No. 258, Ed. 1 Sunday, July 5, 2009 (open access)

The Altus Times (Altus, Okla.), Vol. 111, No. 258, Ed. 1 Sunday, July 5, 2009

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 5, 2009
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, July 5, 2000 (open access)

The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, July 5, 2000

Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date: July 5, 2000
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 114, No. 54, Ed. 1 Monday, July 5, 2004 (open access)

The Alvin Sun (Alvin, Tex.), Vol. 114, No. 54, Ed. 1 Monday, July 5, 2004

Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date: July 5, 2004
Creator: Schwind, Jim & Looby, Edward
Object Type: Newspaper
System: The Portal to Texas History
Analysis of Electron Cloud at Rhic. (open access)

Analysis of Electron Cloud at Rhic.

Pressure rises with high intense beams are among the main luminosity limitations at RHIC. Observations during the latest runs show beam induced electron multipacting as one of the causes for these pressure rises. Experimental studies are carried out at RHIC using devoted instrumentation to understand the mechanism leading to electron clouds. In the following, we report the experimental electron cloud data and the analyzed results using computer simulation codes.
Date: July 5, 2004
Creator: Iriso, U.; Blaskiewicz, M.; Cameron, P.; Drees, A.; Fischer, W. & Al., Et
Object Type: Article
System: The UNT Digital Library
Application of a New Method for Analyzing Images: Two-Dimensional Non-Linear Additive Decomposition (open access)

Application of a New Method for Analyzing Images: Two-Dimensional Non-Linear Additive Decomposition

This paper documents the application of a new image processing algorithm, two-dimensional non-linear additive decomposition (NLAD), which is used to identify regions in a digital image whose gray-scale (or color) intensity is different than the surrounding background. Standard image segmentation algorithms exist that allow users to segment images based on gray-scale intensity and/or shape. However, these processing techniques do not adequately account for the image noise and lighting variation that typically occurs across an image. NLAD is designed to separate image noise and background from artifacts thereby providing the ability to consistently evaluate images. The decomposition techniques used in this algorithm are based on the concepts of mathematical morphology. NLAD emulates the human capability of visually separating an image into different levels of resolution components, denoted as ''coarse'', ''fine'', and ''intermediate''. Very little resolution information overlaps any two of the component images. This method can easily determine and/or remove trends and noise from an image. NLAD has several additional advantages over conventional image processing algorithms, including no need for a transformation from one space to another, such as is done with Fourier transforms, and since only finite summations are required, the calculational effort is neither extensive nor complicated.
Date: July 5, 2006
Creator: Zaccaria, M. A.; Drudnoy, D. M. & Stasenko, J. E.
Object Type: Article
System: The UNT Digital Library
Archer County Advocate (Holliday, Tex.), Vol. 4, No. 65, Ed. 1 Thursday, July 5, 2007 (open access)

Archer County Advocate (Holliday, Tex.), Vol. 4, No. 65, Ed. 1 Thursday, July 5, 2007

Weekly newspaper from Holliday, Texas that includes local, state, and national news along with advertising.
Date: July 5, 2007
Creator: Stevens, Charlotte
Object Type: Newspaper
System: The Portal to Texas History
Archer County News (Archer City, Tex.), No. 27, Ed. 1 Thursday, July 5, 2001 (open access)

Archer County News (Archer City, Tex.), No. 27, Ed. 1 Thursday, July 5, 2001

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: July 5, 2001
Creator: Lewis, Shelley
Object Type: Newspaper
System: The Portal to Texas History
Archer County News (Archer City, Tex.), No. 27, Ed. 1 Thursday, July 5, 2007 (open access)

Archer County News (Archer City, Tex.), No. 27, Ed. 1 Thursday, July 5, 2007

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: July 5, 2007
Creator: Lewis, Shelley
Object Type: Newspaper
System: The Portal to Texas History
Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000 (open access)

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personnel dosimetry shall be provided to (1) radiological workers who are likely to receive at least 100 mrem annually, and (2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years 1993-2000 confirm that personnel dosimetry is not needed for individuals located in areas monitored by the program.
Date: July 5, 2001
Creator: Bivins, Steven R & Stoetzel, Gregory A
Object Type: Report
System: The UNT Digital Library
Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000 (open access)

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personnel dosimetry shall be provided to 1) radiological workers who are likely to receive at least 100 mrem annually, and 2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years 1993-2000 confirm that personnel dosimetry is not needed for individuals located in areas monitored by the program.
Date: July 5, 2001
Creator: Bivins, Steven R. & Stoetzel, Gregory A.
Object Type: Report
System: The UNT Digital Library