Thin and compensating solenoids for ZEUS detector

Acerbi, E.; Alessandria, F.; Baccaglioni, G.; Fabrici, E.; Rossi, L.; Bruzzese, R.; Pasotti, G.; Ricci, M.; Sacchetti, N.; Spadoni, M.; Dormicchi, O.; Fabbricatore, P.; Penso, R.

doi:10.1109/20.11490

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…The momenta of charged particles were measured by the Central Tracking Detector (CTD) [149][150][151] in the 1.43 T magnetic field of the solenoid [152]. The CTD was a cylindrical drift chamber measuring the direction, momentum and energy loss (dE/dx).…”

Section: Zeus Detectormentioning

confidence: 99%

Charm production and QCD analysis at HERA and LHC

Zenaiev

2017

Eur. Phys. J. C

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This review is devoted to the study of charm production in ep and pp collisions. The total set of measurements obtained by the two collaborations H1 and ZEUS from HERA and their combination is outlined, as well as complementary data obtained by the LHCb Collaboration at the LHC. After fitting the parton distribution functions the charm-production cross sections are predicted within perturbative QCD at next-to-leading order using the fixed-flavournumber scheme. Agreement with the data is found. The combined HERA charm data are sensitive to the c-quark mass and enabled its accurate determination. The predictions crucially depend upon the knowledge of the gluon distribution function. It is shown that the shape of the gluon distribution based on the HERA data is considerably improved by adding the measurements from LHCb and applicable down to values x of about 10 −6 , where x is the proton momentum fraction carried by a parton.

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Section: Zeus Detectormentioning

confidence: 99%

Charm production and QCD analysis at HERA and LHC

Zenaiev

2017

Eur. Phys. J. C

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“…The main detector components are briefly described below. The momenta of charged particles were measured by the Central Tracking Detector (CTD) [149,150,151] in the 1.43 T magnetic field of the solenoid [152]. The CTD was a cylindrical drift chamber measuring the direction, momentum and energy loss (dE/dx).…”

Section: Zeus Detectormentioning

confidence: 99%

Charm Production and QCD Analysis at HERA and LHC

Zenaiev

2016

Preprint

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This review is devoted to the study of charm production in ep and pp collisions. The total set of measurements obtained by the two collaborations H1 and ZEUS from HERA and their combination is outlined, as well as complementary data obtained by the LHCb collaboration at the LHC. After fitting the parton distribution functions the charm production cross sections are predicted within perturbative QCD at next-to-leading order using the fixed-flavour-number scheme. Agreement with the data is found. The combined HERA charm data are sensitive to the c-quark mass and enabled its accurate determination. The predictions crucially depend upon the knowledge of the gluon distribution function. It is shown that the shape of the gluon distribution based on the HERA data is considerably improved by adding the measurements from LHCb and applicable down to values x of about 10 −6 , where x is the proton momentum fraction carried by a parton.

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“…The superconducting compensating solenoid of the ZEUS experiment in the HERA accelerator was designed, built and tested by Ansaldo ABB Componenti under a commissioning of the Italian Institute for Nuclear Physics (INFN) Ill. The principal requirements for this compensating solenoid are: -to reach a field inteeral 10% higher than the ZEUS thin solenoid [ 2,3] with a maximum coil length of 1.2 m and a warm bore of 280 mm in diameter ; -to have a reproducible and well known magnetic axis position; -to have a negligible fringe field. The philosophy adopted in the design was for an epoxy impregnated bath cooled coil with a cold iron yoke, both directly supported by the inner pipe of the helium chamber.…”

Section: Introductionmentioning

confidence: 99%

The compensating magnet for the Zeus detector

et al. 1991

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A bath cooled superconducting solenoid with a 280 mm in diameter warm bore, a coil length of 1200 mm and a central field of 5 T at the rated current of 950 A, was built at Ansaldo ABB Componenti. It will operate as compensating coil inside the Zeus Detector at HERA, Desy. The coil is shielded by a 3.5 tons low carbon steel cold yoke and the cold helium chamber was designed to withstand a max pressure of 20 bar. The main results obtained during the cool down and energization are reported.

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Thin and compensating solenoids for ZEUS detector

Cited by 8 publications

References 2 publications

Charm production and QCD analysis at HERA and LHC

Charm production and QCD analysis at HERA and LHC

Charm Production and QCD Analysis at HERA and LHC

The compensating magnet for the Zeus detector

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