The BaBar LST Detector High Voltage System: Design and Implementation

Benelli, G.; Honscheid, K.; Lewis, E.A.; Regensburger, J. J.; Smith, D. S.

doi:10.1109/nssmic.2005.1596453

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…The high voltage power supplies designed and produced by the Ohio State University [81] represented a cost-effective solution that fulfilled all of the stated requirements. The LSTs in each sextant were powered by three power supplies.…”

Section: High Voltage Distributionmentioning

confidence: 99%

The BABAR Detector: Upgrades, Operation and Performance

2013

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Section: High Voltage Distributionmentioning

confidence: 99%

The BABAR Detector: Upgrades, Operation and Performance

2013

Preprint

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“…The components used in this analysis are the tracking system composed of a five-layer silicon vertex detector and a 40-layer drift chamber, the Cherenkov detector for charged π-K discrimination, the CsI calorimeter for photon and electron identification, and the flux return located outside of the 1.5T solenoidal coil and instrumented with resistive plate chambers for muon and neutral hadron identification. For the most recent 121 fb −1 of data, a portion of the muon system has been upgraded to limited streamer tubes [7,8].…”

Section: The Babar Detector and Datasetmentioning

confidence: 99%

Search forB+→ℓ+νℓrecoiling againstB−→D0
Aubert¹,
Karyotakis²,
Lees³
et al. 2010
Phys. Rev. D
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83
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31
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We present a search for the decay B + → ℓ + ν ℓ (ℓ = τ, µ, or e) in (458.9±5.1)×10 6 Υ (4S) decays recorded with the BABAR detector at the SLAC PEP-II B-Factory. A sample of events with one reconstructed exclusive semi-leptonic B decay (B − → D 0 ℓ −ν X) is selected, and in the recoil a search for B + → ℓ + ν ℓ signal is performed. The τ is identified in the following channels: τ + → e + ν e ν τ , τ + → µ + ν µ ν τ , τ + → π + ν τ , and τ + → π + π 0 ν τ . The analysis strategy and the statistical procedure is set up for branching fraction extraction or upper limit determination. We determine from the dataset a preliminary measurement of B(B + → τ + ν τ ) = (1.8 ± 0.8 ± 0.1) × 10 −4 , which excludes zero at 2.4σ, and f B = 230 ± 57 MeV. Combination with the hadronically tagged measurement yields B(B + → τ + ν τ ) = (1.8 ± 0.6) × 10 −4 . We also set preliminary limits on the branching fractions at B(B + → e + ν e ) < 7.7 × 10 −6 (90% C.L.), B(B + → µ + ν µ ) < 11 × 10 −6 (90% C.L.), and B(B + → τ + ν τ ) < 3.2 × 10 −4 (90% C.L.).

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“…The design of the HV power supplies was guided by these requirements. They are custom built [6] and can operate between 0 and 6000 V. Each supply consists of 80 HV channels in four independent HV groups. The current monitoring, current limits and trip times are on a channel by channel basis.…”

Section: High Voltage Systemmentioning

confidence: 99%

The BaBar Muon System Upgrade

Menges

IEEE Nuclear Science Symposium Conference Record, 2005

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Resistive Plate Chambers (RPCs) were used for the instrumentation of the iron flux return of the BABARdetector as a muon system. Unfortunately the efficiency of the original RPCs degraded rapidly with time. Limited Streamer Tubes (LSTs) were chosen for an upgrade of the barrel portion of the detector.The phased installation started in summer 2004 with replacing two sextants of the BABARbarrel muon system with LSTs. The modules for the remaining four sextants are under long-term test at SLAC and ready for installation, expected in 2006. The modules become inaccessible once installed in BABAR, so it is critical to select only perfectly working tubes. To accomplish this a strong QC system was established during the prototype phase, and fully implemented throughout pre-production and construction. To spot any damage during transport, the final modules are subjected to comprehensive tests at SLAC immediately after arrival and kept under long-term test till installation into BABAR. Details of these tests and results from long-term testing will be discussed. Since spring 2005 the PEP-II accelerator is running and BABARis collecting data. First experience from data taking with the LSTs will be presented and the performance of the detector discussed.

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The BaBar LST Detector High Voltage System: Design and Implementation

Cited by 6 publications

References 2 publications

The BABAR Detector: Upgrades, Operation and Performance

The BABAR Detector: Upgrades, Operation and Performance

Search forB+→ℓ+νℓrecoiling againstB−→D0
Aubert¹,
Karyotakis²,
Lees³
et al. 2010
Phys. Rev. D
Self Cite
83
3
31
0
View full text Add to dashboard Cite

The BaBar Muon System Upgrade

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The BaBar LST Detector High Voltage System: Design and Implementation

Cited by 6 publications

References 2 publications

The BABAR Detector: Upgrades, Operation and Performance

The BABAR Detector: Upgrades, Operation and Performance

Search forB+→ℓ+νℓrecoiling againstB−→D0Aubert1, Karyotakis2, Lees3 et al. 2010Phys. Rev. DSelf Cite833310View full textAdd to dashboardCite

The BaBar Muon System Upgrade

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Product

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About

Search forB+→ℓ+νℓrecoiling againstB−→D0
Aubert¹,
Karyotakis²,
Lees³
et al. 2010
Phys. Rev. D
Self Cite
83
3
31
0
View full text Add to dashboard Cite