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Improving the Fermilab Booster Emittance

Description: Demand of high luminosity in the Tevatron collider in Fermilab makes the small beam emittance coming out of the 8 GeV Booster a highly desirable feature. This is because Booster bunches with small emittance, when eventually coalesced into Main Ring bunches, will ensure a high luminosity in the collider. Efforts have been made to identify factors limiting the phase space density in both transverse and longitudinal dimensions. The experimental result points to space charge induced tune spread at … more
Date: June 9, 1988
Creator: Chao, Y.; Crisp, J.; Holmes, S.; Lackey, J. & Merz, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Coherent betatron instability in the Tevatron

Description: The coherent betatron instability was first observed during the recent 1987-88 Tevatron fixed target run. In this operating mode 1000 consecutive bunches are loaded into the machine at 150 GeV with a bunch spacing of 18.8 /times/ 10/sup -9/ sec (53 MHz). The normalized transverse emittance is typically 15 ..pi.. /times/ 10/sup -6/ m rad in each plane with a longitudinal emittance of about 1.5 eV-sec. The beam is accelerated to 800 GeV in 13 sec. and then it is resonantly extracted during a 23 s… more
Date: June 9, 1988
Creator: Bogacz, S. A.; Harrison, M. & Ng, K. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analytical and numerical evaluation of Landau cavities in the Fermilab Booster

Description: Longitudinal coupled bunch instability has been observed in the Fermilab Booster at high intensity. It is a cause for concern due to its effect on the Tevatron collider performance. We study this phenomenon using initial value technique to correctly account for the underlying transient nature. Analytic result is obtained for any mode and comparison is made between ordinary harmonic potential and higher harmonic (Landau) cavity potential. A computer program is developed to facilitate the calcula… more
Date: June 9, 1988
Creator: Chao, Yu-Chiu & Ng, King-Yuen
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Principals]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: June 9, 1988
Duration: 1 minute 37 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Police Accident]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 12pm.
Date: June 9, 1988
Duration: 55 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Addison]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: June 9, 1988
Duration: 1 minute 48 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Review Board]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5pm.
Date: June 9, 1988
Duration: 44 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Review Board]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: June 9, 1988
Duration: 1 minute 31 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Police Review]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: June 9, 1988
Duration: 47 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Cop Hurt]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: June 9, 1988
Duration: 46 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Amos Trial]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: June 9, 1988
Duration: 59 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Coupled Bunch Instability in Fermilab Booster: Longitudinal Phase-Space Simulation

Description: The physical presence of vacuum structures can be expressed in terms of a coupling impedance experienced by the beam. The beam environment considered here consist of parasitic higher order modes of the r.f. cavities. These resonances may have high enough Q's to allow consecutive bunches to interact through mutually induced fields. The cumulative effect of such fields as the particles pass through the cavity may be to induce a coherent buildup in synchrotron motion of the bunches, i.e., a longit… more
Date: June 9, 1988
Creator: Bogacz, S. A. & Stahl, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proposed design of SAMUS (small angle muon spectrometer) toroid and its magnetic field calculation

Description: Presently the D/null/ detector has three big toroidal magnets; one Central Toroid (CF) and two End Wall Toroids (EF). The EF toroids have central openings 72'' x 72''. Originally, this opening was meant for possible future end-plug calorimeters. Instead we are now designing Small Angle Muon Spectrometer (SAMUS) for the opening. The major component will be built at Serpukhov. The design of the toroid magnets and its magnetic field calculations is being done by exchanging information between Serp… more
Date: June 9, 1988
Creator: Yamada, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Luminosity lifetime in the Tevatron

Description: Since the inauguration of colliding proton-antiproton operations in 1987, the Tevatron has exhibited luminosity lifetimes shorter than expected. During a typical colliding beam storage period, called a store, luminosity is calculated periodically by measuring the charge and emittances of each bunch. The growth of the transverse bunch emittances is the dominant cause of luminosity deterioration. Throughout, this period, the position spectrum of the bunches exhibited betatron signals larger than … more
Date: June 9, 1988
Creator: Jackson, G.; Finley, D.; Johnson, R. P.; Kerns, Q.; McCarthy, J.; Siemann, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Willard's back]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6 P.M.
Date: June 9, 1988
Duration: 1 minute 55 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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