MCP-PMT studies at the High-B test facility at Jefferson Lab

Ilieva, Y.; Allison, L. J.; Cao, T.; Kalicy, G.; Nadel-Turoński, P.; Park, K.; Schwarz, C.; Schwiening, J.; Zorn, C.

doi:10.1088/1748-0221/11/03/c03061

Cited by 12 publications

(20 citation statements)

References 13 publications

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“…While one measurement of the near-threshold quasielastic J/ψ production off the deuteron has been done in the past, data on final-state interactions do not exist. With its high luminosity and large acceptance, the CLAS12 detector offers a window of opportunity to measure nearthreshold photo-production of J/ψ off the deuteron [115].…”

Section: Y Ilievamentioning

confidence: 99%

Nucleon and Nuclear Structure Through Dilepton Production

Anikin¹,

Baltzell²,

Boër³

et al. 2018

Acta Phys. Pol. B

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Transverse momentum distributions and generalized parton distributions provide a comprehensive framework for the three-dimensional imaging of the nucleon and the nucleus experimentally using deeply virtual semi-exclusive and exclusive processes. The advent of combined high luminosity facilities and large acceptance detector capabilities enables experimental investigation of the partonic structure of hadrons with time-like virtual probes, in complement to the rich on-going space-like virtual probe program. The merits and benefits of the dilepton production channel for nuclear structure studies are discussed within the context of the International Workshop on Nucleon and Nuclear Structure through Dilepton Production taking place at the European Center for Theoretical Studies in Nuclear Physics and Related Areas (ECT ) of Trento. Particularly, the double deeply virtual Compton scattering, the time-like Compton scattering, the deeply virtual meson production, and the Drell-Yan processes are reviewed and a strategy for high impact experimental measurements is proposed.PACS. 13.40-f Electromagnetic processes and properties -13.60.Fz Elastic and Compton scattering -13.60.Le Meson production a Corresponding author: voutier@ipno.in2p3.fr physics. After decades of theoretical and experimental efforts in elastic and deep inelastic lepton scatterings, a new formulation of the hadron structure [1-3] emerges that builds any hadron from the correlations between its inner partons. This powerful approach provides not only a tomographic image [4][5][6] of the nucleon and the nucleus, but also a comprehensive description of their internal dy-arXiv:1712.04198v2 [nucl-ex]

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Section: Y Ilievamentioning

confidence: 99%

Nucleon and Nuclear Structure Through Dilepton Production

Anikin¹,

Baltzell²,

Boër³

et al. 2018

Acta Phys. Pol. B

Self Cite

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“…Right: the average waveforms of the PP0365G sensor at θ = 0 • and varying magnetic field strengths. There is a clear negative correlation between the signal amplitude and field magnitude [45].…”

Section: Discussionmentioning

confidence: 93%

“…The gain of the sensors is proportional to the average charge per pulse collected on the sensor anode, and thus the performance can be measured in terms of the average charge The photocathode is exposed to single 470 nm photons to produce photoelectrons, with a large voltage difference between the anode and cathode used to create an avalanche. The total charge is collected on the anode, amplified by a preamplifier, and digitized by an fADC and read out by a DAQ [45].…”

Section: Resultsmentioning

confidence: 99%

“…In the fall of 2014 two single-anode MCP-PMTs were tested at Jefferson Lab [45], a PHOTONIS PP0365G (6µm pore size and a 18.2 mm active area) [46] and a Photek PMT210 (3µm pore size and a 10 mm active area) [47], shown in Figure 47 at the top and bottom right respectively. The FROST superconducting solenoidal magnet, with a field tunable up to 5 T with a cylindrical bore diameter of 12.7 cm and a length of 76.2 cm, was used for testing [48].…”

Section: Methodsmentioning

confidence: 99%

“…My contribution to these studies was assisting in the experimental setup, data monitoring and collection, restructuring and updating the signal reconstruction software, and operating the FROST magnet and electronics both during and between runs. The analysis of the data was done by Dr. Yordanka Ilieva from the University of South Carolina, who's results are shown below and taken, with permission, from [45].…”

Section: Methodsmentioning

confidence: 99%

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R&D of a high-performance DIRC detector for a future electron-ion collider

Allison

2017

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An Electron-Ion Collider (EIC) is proposed as the next big scientific facility to be built in the United States, costing over $1 billion in design and construction. Each detector concept for the electron/ion beam interaction point is integrated into a large solenoidal magnet. The necessity for excellent hadronic particle identification (pion/kaon/proton) in the barrel region of the solenoid has pushed research and development (R&D) towards a new, high-performance Detection of Internally Reflected Cherenkov light (DIRC) detector design. The passage of a high energy charged particle through a fused silica bar of the DIRC generates optical Cherenkov radiation. A large fraction of this light propagates by total internal reflection to the end of the bar, where the photon trajectories expand in a large volume before reaching a highly segmented photo-detector array. The spatial and temporal distribution of the Cherenkov light at the photo-detector array allows one to reconstruct the angle of emission of the light relative to the incident charged particle track. In order to reach the desired performance of 3σ π/K separation at 6 GeV/c particle momentum a new 3-layer spherical lens focusing optic with a lanthanum crown glass central layer was designed to have a nearly flat focal plane. In order to validate the EIC DIRC simulation package, a synergistic test beam campaign was carried out in 2015 at the CERN PS with the PANDA Barrel DIRC group using a prototype DIRC detector. Along with the analysis of the CERN test beam data, measurements of the focal plane of the 3-layer lens were performed using a custom-built laser setup at Old Dominion University. Radiation hardness of the lanthanum crown glass was tested using a 160 keV X-ray source and a monochromator at the Catholic University of America. Results of these test-bench experiments and the analysis of the 2015 CERN test beam data are presented here.iii

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Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors

Xie

Hattawy

Chiu

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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Microchannel plate photodetectors provide both picosecond time resolution and sub-millimeter position resolution, making them attractive photosensors for particle identification detectors of a future U.S. Electron Ion Collider. We have tested the rate capability and magnetic field tolerance of 6×6 cm 2 microchannel plate photodetectors fabricated at Argonne National Laboratory. The microchannel plate photodetector is designed as a low-cost all-glass vacuum package with a chevron pair stack of next-generation microchannel plates functionalized by atomic layer deposition. The rate capability test was performed using Fermilab's 120 GeV primary proton beam, and the magnetic field tolerance test was performed using a solenoid magnetic with tunable magnetic field strength up to 4 Tesla. The measured gain of the microchannel plate photodetector is stable up to 75 kHz/cm 2 , and varies depending on the applied magnetic field strength and the rotation angle relative to the magnetic field direction.

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MCP-PMT studies at the High-B test facility at Jefferson Lab

Cited by 12 publications

References 13 publications

Nucleon and Nuclear Structure Through Dilepton Production

Nucleon and Nuclear Structure Through Dilepton Production

R&D of a high-performance DIRC detector for a future electron-ion collider

Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors

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