The Multiturn Charge Exchange Injection System for the Fermilab Booster Accelerator

Hojvat, C.; Ankenbrandt, C.; Brown, Bruce; Cosgrove, D.; Garvey, J.; Johnson, R. P.; Joy, Michael; Lackey, J.; Meisner, K.; Schmitz, Th.; Teng, L. C.; Webber, R.

doi:10.1109/tns.1979.4329966

Cited by 38 publications

(17 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Booster is the first synchrotron that the particles encounter, consisting of a sequence of dipole and quadrupole magnets and 17 RF cavities in a 151 meter circle that accelerate particles from 400 MeV to 8 GeV. Injection is done via a multiturn charge-exchange injection [55], which is the reason that H − ions are used in the beginning of the accelerator chain. After debunching the H − ions from the Linac to minimize their momentum spread, the H − beam is merged over multiple turns with the proton beam that is already in the booster, and the electrons are stripped by a carbon foil.…”

Section: Proton Sourcementioning

confidence: 99%

Search for Heavy Resonances in the Dimuon Channel with the DØ Detector

Berg

2009

View full text Add to dashboard Cite

Section: Proton Sourcementioning

confidence: 99%

Search for Heavy Resonances in the Dimuon Channel with the DØ Detector

Berg

2009

View full text Add to dashboard Cite

“…It is a synchrotron with a radius of 75 m. The beam of H − ions from the LINAC is passed through a thin carbon foil when the particle bunches are injected into the Booster [102,103]. The carbon foil strips off the orbital electrons, leaving behind the positively charged protons.…”

Section: Boostermentioning

confidence: 99%

Measurement of the electroweak top quark production cross section and the CKM matrix element Vtb with the D0 experiment

Kirsch

2009

View full text Add to dashboard Cite

Diese Dissertation ist auf den Internetseiten der Hochschulbibliothek online verfügbar. ZusammenfassungIn der vorliegenden Analyse wird in einem etwa 1 fb −1 an integrierter Luminosität umfassenden Datensatz des DØ-Experiments nach der Produktion einzelner Top-Quarks mittels elektroschwacher Wechselwirkung gesucht. Die Ereignisse wurden am Tevatron-Beschleuniger des Fermi National Accelerator Laboratory, angesiedelt in Batavia, IL, USA, in ProtonAntiproton-Kollisionen bei einer Schwerpunktsenergie von √ s = 1.96 TeV aufgezeichnet. Die Analyse konzentriert sich dabei auf die Messung des kombinierten Wirkunsquerschnitts des s-(tb) und des t-Kanal-(tqb) Produktionsmechanismus:pp → tb + X, tqb + X.Betrachtet werden hierbei Endzustände in denen das W Boson, welches beim Zerfall des Top-Quarks entsteht, im Weiteren in ein Elektron oder ein Myon sowie ein entsprechendes Neutrino zerfällt. Dieser Wirkungsquerschnitt ist direkt proportional zum Quadrat des CKMMatrixelements |V tb | und erlaubt somit dessen Messung ohne zusätzliche Annahmenüber die Unitarität der CKM-Matrix oder die Anzahl der Fermion-Generationen im Standardmodell der Elementarteilchenphysik. Eine Messung des Produktionswirkungsquerschnittes einzelner Top-Quarks ermöglicht somit einen direkten Test der V-A-Struktur der elektroschwachen Wechselwirkung. Die Ereignisse werden zunächst in einer sogenannten IntroductionTo understand the composition of matter and the fundamental forces of nature is an aim that has been driving human kind for centuries. On large scales the theory of general relativity [1] describes the clustering of galaxies and the movement of planets around the sun due to gravity. The theory of general relativity extends the Newtonian gravity [2] that is able to explain the falling of apples from trees. On small scales, scattering experiments are performed to find the elementary particles matter is built of. It has been shown that atoms consist of electrons and nucleons [3], and that even the nucleons are not elementary. Their basic constitutents are called quarks [4]. The quark model led to the development of Quantum ChromoDynamics (QCD), explaining the behaviour of the strong force. Furthermore, the weak and the electromagnetic forces could be unified in the Glashow-Weinberg-Salam (GWS) model. Building upon much earlier work, in the 1960s and 1970s the Standard Model of elementary particle physics was developed, a quantum field theory describing the interactions at very small scales, including all fundamental forces except for gravity.At particle accelerators the Standard Model has been tested and will be tested further to a great precision [5]. The data analyzed in this thesis have been collected at the world's highest energetic-collider, the Tevatron, located at the Fermi National Accelerator Laboratory (FNAL) in the vicinity of Chicago, IL, USA. There, protons and antiprotons are collided at a center-of-mass energy of √ s = 1.96 TeV. The discovery of the top quark [6,7] was one of the remarkable results not only for the CDF and DØ exp...

show abstract

“…In the Booster, a 8 GeV fast cycling proton synchrotron with a 151 m diameter, H − ions are injected via a multi-turn charge-exchange injection [24,33], which is the reason why H − ions are used in the beginning of the accelerator chain. After debunching the H − ions from the Linac to minimize their momentum spread, the H − beam passes through a carbon foil which strips off the electrons, and is merged over multiple turns with the proton beam already in the Booster.…”

Section: Accelerator Chainmentioning

confidence: 99%

Direct search for heavy neutral gauge bosons in the dielectron channel at D0

Katsanos

2008

View full text Add to dashboard Cite

Direct Search for Heavy Neutral Gauge Bosons in the Dielectron Channel at D0 Ioannis KatsanosThe existence of a heavy partner of the Z boson, a so-called Z boson, is proposed in many extensions of the Standard Model, including grand unified theories, extended tecnhicolor models, and models with extra dimensions. This dissertation describes a direct search in the di-electron invariant mass spectrum for evidence of Z production.The analysis used 1.106 ± 0.067 fb −1 of data collected from 2002 to 2006 with the D0 detector, which studies pp interactions at a center-of-mass energy of √ s = 1.96 TeV.In the absence of a Z signal, a 95% upper limit on the production cross section is set for a Z decaying into dielectrons. The existence of a Z with mass less than 920 GeV is excluded at the 95% confidence level, assuming the sequential Z model.This result represents a significant improvement over the most stringent published limit from a direct search to date, namely 850 GeV.

show abstract

The Multiturn Charge Exchange Injection System for the Fermilab Booster Accelerator

Cited by 38 publications

References 2 publications

Search for Heavy Resonances in the Dimuon Channel with the DØ Detector

Search for Heavy Resonances in the Dimuon Channel with the DØ Detector

Measurement of the electroweak top quark production cross section and the CKM matrix element Vtb with the D0 experiment

Direct search for heavy neutral gauge bosons in the dielectron channel at D0

Contact Info

Product

Resources

About