Measurement of the Ion Blocking by the Passive Bipolar Grid

Evgeny Shulga; Vladislav Zakharov; Prakhar Garg; Thomas K. Hemmick; Alexander Milov

doi:10.1109/TNS.2020.3042311

Measurement of the Ion Blocking by the Passive Bipolar Grid

Evgeny Shulga, Vladislav Zakharov, Prakhar Garg, Thomas K. Hemmick, Alexander Milov

Department of Particle Physics and Astrophysics

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

The ion backflow (IBF) is the main limiting factor for operating time projection chambers (TPCs) at high event rates. A significant effort is invested by many experimental groups to solve this problem. This article explores a solution based on operating a passive bipolar wire grid. In the presence of the magnetic field, the grid more effectively attenuates the ion current than the electron current going through it. Transparencies of the grid to electrons and ions are measured for different gas mixtures and magnitudes of the magnetic field. The results suggest that in a sufficiently strong magnetic field, the bipolar wire grid can be used as an effective and independent device to suppress the IBF in TPCs.

Original language	English
Article number	9279256
Pages (from-to)	59-69
Number of pages	11
Journal	IEEE Transactions on Nuclear Science
Volume	68
Issue number	1
DOIs	https://doi.org/10.1109/TNS.2020.3042311
State	Published - Jan 2021

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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10.1109/TNS.2020.3042311License: CC BY

Cite this

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title = "Measurement of the Ion Blocking by the Passive Bipolar Grid",

abstract = "The ion backflow (IBF) is the main limiting factor for operating time projection chambers (TPCs) at high event rates. A significant effort is invested by many experimental groups to solve this problem. This article explores a solution based on operating a passive bipolar wire grid. In the presence of the magnetic field, the grid more effectively attenuates the ion current than the electron current going through it. Transparencies of the grid to electrons and ions are measured for different gas mixtures and magnitudes of the magnetic field. The results suggest that in a sufficiently strong magnetic field, the bipolar wire grid can be used as an effective and independent device to suppress the IBF in TPCs. ",

author = "Evgeny Shulga and Vladislav Zakharov and Prakhar Garg and Hemmick, \{Thomas K.\} and Alexander Milov",

note = "The authors would like to express gratitude to Prof. Amos Breskin and Dr. Arindam Roy of the Weizmann Institute for fruitful discussions and help. The authors are thankful to the High-Energy group at the Weizmann Institute working on the ATLAS experiment for their help in making parts of the setup. The authors would like to thank the group of Prof. Mirko Planini{\'c} from the University of Zagreb for help with setting up floating picoammerts and the reliable performance of their devices during the measurements. Special thanks are to the Physics Core Facility group of the Weizmann Institute for their constant support during the experiment. This work was supported by the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel, under Grant 2016240",

year = "2021",

month = jan,

doi = "10.1109/TNS.2020.3042311",

language = "الإنجليزيّة",

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journal = "IEEE Transactions on Nuclear Science",

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T1 - Measurement of the Ion Blocking by the Passive Bipolar Grid

AU - Shulga, Evgeny

AU - Zakharov, Vladislav

AU - Garg, Prakhar

AU - Hemmick, Thomas K.

AU - Milov, Alexander

N1 - The authors would like to express gratitude to Prof. Amos Breskin and Dr. Arindam Roy of the Weizmann Institute for fruitful discussions and help. The authors are thankful to the High-Energy group at the Weizmann Institute working on the ATLAS experiment for their help in making parts of the setup. The authors would like to thank the group of Prof. Mirko Planinić from the University of Zagreb for help with setting up floating picoammerts and the reliable performance of their devices during the measurements. Special thanks are to the Physics Core Facility group of the Weizmann Institute for their constant support during the experiment. This work was supported by the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel, under Grant 2016240

PY - 2021/1

Y1 - 2021/1

N2 - The ion backflow (IBF) is the main limiting factor for operating time projection chambers (TPCs) at high event rates. A significant effort is invested by many experimental groups to solve this problem. This article explores a solution based on operating a passive bipolar wire grid. In the presence of the magnetic field, the grid more effectively attenuates the ion current than the electron current going through it. Transparencies of the grid to electrons and ions are measured for different gas mixtures and magnitudes of the magnetic field. The results suggest that in a sufficiently strong magnetic field, the bipolar wire grid can be used as an effective and independent device to suppress the IBF in TPCs.

AB - The ion backflow (IBF) is the main limiting factor for operating time projection chambers (TPCs) at high event rates. A significant effort is invested by many experimental groups to solve this problem. This article explores a solution based on operating a passive bipolar wire grid. In the presence of the magnetic field, the grid more effectively attenuates the ion current than the electron current going through it. Transparencies of the grid to electrons and ions are measured for different gas mixtures and magnitudes of the magnetic field. The results suggest that in a sufficiently strong magnetic field, the bipolar wire grid can be used as an effective and independent device to suppress the IBF in TPCs.

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DO - 10.1109/TNS.2020.3042311

M3 - مقالة

SN - 0018-9499

VL - 68

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JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

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M1 - 9279256

ER -

Measurement of the Ion Blocking by the Passive Bipolar Grid

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All Science Journal Classification (ASJC) codes

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