Gating in the ALEPH time projection chamber

S. R. Amendolia; M. Binder; W. Blum; M. Bykhovsky; A. Caldwell; M. Cherney; D. F. Cowen; D. Demille; A. Farilla; F. Fidecaro; S. H. Gu; Y. N. Guo; J. M. Izen; R. C. Jared; W. Kilgore; I. Lehraus; J. J. Love; P. Maas; P. S. Marrocchesi; R. Matthewson; J. May; M. Mermikides; E. Milotti; A. Minten; D. Muller; M. J. Price; J. Richstein; R. Richter; L. Rolandi; G. Sanguinetti; D. Schlatter; R. Settles; G. Sinnis; G. Stefanini; U. Stierlin; M. Takashima; W. Tejessy; J. Thomas; A. Vayaki; J. Wear; E. Wicklund; W. Witzeling; S. L. Wu; W. M. Wu

doi:10.1016/0168-9002(86)91213-1

Gating in the ALEPH time projection chamber

S. R. Amendolia, M. Binder, W. Blum, M. Bykhovsky, A. Caldwell, M. Cherney, D. F. Cowen, D. Demille, A. Farilla, F. Fidecaro, S. H. Gu, Y. N. Guo, J. M. Izen, R. C. Jared, W. Kilgore, I. Lehraus, J. J. Love, P. Maas, P. S. Marrocchesi, R. MatthewsonJ. May, M. Mermikides, E. Milotti, A. Minten, D. Muller, M. J. Price, J. Richstein, R. Richter, L. Rolandi, G. Sanguinetti, D. Schlatter, R. Settles, G. Sinnis, G. Stefanini, U. Stierlin, M. Takashima, W. Tejessy, J. Thomas, A. Vayaki, J. Wear, E. Wicklund, W. Witzeling, S. L. Wu, W. M. Wu

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Abstract

The ALEPH TPC at LEP will use a gating grid to prevent distortions caused by space charge buildup in its 2.2 m drift region. Sets of measurements have demonstrated the feasibility of a "synchronous ion trapping" mode of gating, which reduces the positive ion flux through the grid by more than two orders of magnitude. A novel mode of gating will be discussed which would permit static operation of the gate, thereby avoiding the complexity of switching between the open and closed states of the gate. This mode would rely on the dissimilar gate penetration properties of electrons and ions in the presence of a magnetic field, and it may also provide a way to partially compensate for the E × B effect at the sense wires. A combination of these different modes is proposed for the ALEPH TPC.

Original language	English (US)
Pages (from-to)	403-406
Number of pages	4
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	252
Issue number	2-3
DOIs	https://doi.org/10.1016/0168-9002(86)91213-1
State	Published - Dec 1 1986

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

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10.1016/0168-9002(86)91213-1

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Amendolia, S. R., Binder, M., Blum, W., Bykhovsky, M., Caldwell, A., Cherney, M., Cowen, D. F., Demille, D., Farilla, A., Fidecaro, F., Gu, S. H., Guo, Y. N., Izen, J. M., Jared, R. C., Kilgore, W., Lehraus, I., Love, J. J., Maas, P., Marrocchesi, P. S., ... Wu, W. M. (1986). Gating in the ALEPH time projection chamber. Nuclear Inst. and Methods in Physics Research, A, 252(2-3), 403-406. https://doi.org/10.1016/0168-9002(86)91213-1

@article{5de89d3278554c3985086d26dd49e4d5,

title = "Gating in the ALEPH time projection chamber",

abstract = "The ALEPH TPC at LEP will use a gating grid to prevent distortions caused by space charge buildup in its 2.2 m drift region. Sets of measurements have demonstrated the feasibility of a {"}synchronous ion trapping{"} mode of gating, which reduces the positive ion flux through the grid by more than two orders of magnitude. A novel mode of gating will be discussed which would permit static operation of the gate, thereby avoiding the complexity of switching between the open and closed states of the gate. This mode would rely on the dissimilar gate penetration properties of electrons and ions in the presence of a magnetic field, and it may also provide a way to partially compensate for the E × B effect at the sense wires. A combination of these different modes is proposed for the ALEPH TPC.",

author = "Amendolia, {S. R.} and M. Binder and W. Blum and M. Bykhovsky and A. Caldwell and M. Cherney and Cowen, {D. F.} and D. Demille and A. Farilla and F. Fidecaro and Gu, {S. H.} and Guo, {Y. N.} and Izen, {J. M.} and Jared, {R. C.} and W. Kilgore and I. Lehraus and Love, {J. J.} and P. Maas and Marrocchesi, {P. S.} and R. Matthewson and J. May and M. Mermikides and E. Milotti and A. Minten and D. Muller and Price, {M. J.} and J. Richstein and R. Richter and L. Rolandi and G. Sanguinetti and D. Schlatter and R. Settles and G. Sinnis and G. Stefanini and U. Stierlin and M. Takashima and W. Tejessy and J. Thomas and A. Vayaki and J. Wear and E. Wicklund and W. Witzeling and Wu, {S. L.} and Wu, {W. M.}",

note = "Funding Information: Depending on the background conditions, the operation of a TPC in a continuously sensitive mode can pose a severe problem: the buildup of space charge in the drift region. This space charge is comprised of positive ions which are mainly produced during the proportional amplification at the sense wires and which subsequently enter the drift region. Once in the drift region, the space charge can alter the local electric field, causing unwanted track distortions \[3\].F or this reason, * Presented by D.F. Cowen. ** Supported by the US Department of Energy Contract No. DE-AC03-76SF00098).",

year = "1986",

month = dec,

day = "1",

doi = "10.1016/0168-9002(86)91213-1",

language = "English (US)",

volume = "252",

pages = "403--406",

journal = "Nuclear Inst. and Methods in Physics Research, A",

issn = "0168-9002",

publisher = "Elsevier B.V.",

number = "2-3",

}

Amendolia, SR, Binder, M, Blum, W, Bykhovsky, M, Caldwell, A, Cherney, M, Cowen, DF, Demille, D, Farilla, A, Fidecaro, F, Gu, SH, Guo, YN, Izen, JM, Jared, RC, Kilgore, W, Lehraus, I, Love, JJ, Maas, P, Marrocchesi, PS, Matthewson, R, May, J, Mermikides, M, Milotti, E, Minten, A, Muller, D, Price, MJ, Richstein, J, Richter, R, Rolandi, L, Sanguinetti, G, Schlatter, D, Settles, R, Sinnis, G, Stefanini, G, Stierlin, U, Takashima, M, Tejessy, W, Thomas, J, Vayaki, A, Wear, J, Wicklund, E, Witzeling, W, Wu, SL & Wu, WM 1986, 'Gating in the ALEPH time projection chamber', Nuclear Inst. and Methods in Physics Research, A, vol. 252, no. 2-3, pp. 403-406. https://doi.org/10.1016/0168-9002(86)91213-1

TY - JOUR

T1 - Gating in the ALEPH time projection chamber

AU - Amendolia, S. R.

AU - Binder, M.

AU - Blum, W.

AU - Bykhovsky, M.

AU - Caldwell, A.

AU - Cherney, M.

AU - Cowen, D. F.

AU - Demille, D.

AU - Farilla, A.

AU - Fidecaro, F.

AU - Gu, S. H.

AU - Guo, Y. N.

AU - Izen, J. M.

AU - Jared, R. C.

AU - Kilgore, W.

AU - Lehraus, I.

AU - Love, J. J.

AU - Maas, P.

AU - Marrocchesi, P. S.

AU - Matthewson, R.

AU - May, J.

AU - Mermikides, M.

AU - Milotti, E.

AU - Minten, A.

AU - Muller, D.

AU - Price, M. J.

AU - Richstein, J.

AU - Richter, R.

AU - Rolandi, L.

AU - Sanguinetti, G.

AU - Schlatter, D.

AU - Settles, R.

AU - Sinnis, G.

AU - Stefanini, G.

AU - Stierlin, U.

AU - Takashima, M.

AU - Tejessy, W.

AU - Thomas, J.

AU - Vayaki, A.

AU - Wear, J.

AU - Wicklund, E.

AU - Witzeling, W.

AU - Wu, S. L.

AU - Wu, W. M.

N1 - Funding Information: Depending on the background conditions, the operation of a TPC in a continuously sensitive mode can pose a severe problem: the buildup of space charge in the drift region. This space charge is comprised of positive ions which are mainly produced during the proportional amplification at the sense wires and which subsequently enter the drift region. Once in the drift region, the space charge can alter the local electric field, causing unwanted track distortions \[3\].F or this reason, * Presented by D.F. Cowen. ** Supported by the US Department of Energy Contract No. DE-AC03-76SF00098).

PY - 1986/12/1

Y1 - 1986/12/1

N2 - The ALEPH TPC at LEP will use a gating grid to prevent distortions caused by space charge buildup in its 2.2 m drift region. Sets of measurements have demonstrated the feasibility of a "synchronous ion trapping" mode of gating, which reduces the positive ion flux through the grid by more than two orders of magnitude. A novel mode of gating will be discussed which would permit static operation of the gate, thereby avoiding the complexity of switching between the open and closed states of the gate. This mode would rely on the dissimilar gate penetration properties of electrons and ions in the presence of a magnetic field, and it may also provide a way to partially compensate for the E × B effect at the sense wires. A combination of these different modes is proposed for the ALEPH TPC.

AB - The ALEPH TPC at LEP will use a gating grid to prevent distortions caused by space charge buildup in its 2.2 m drift region. Sets of measurements have demonstrated the feasibility of a "synchronous ion trapping" mode of gating, which reduces the positive ion flux through the grid by more than two orders of magnitude. A novel mode of gating will be discussed which would permit static operation of the gate, thereby avoiding the complexity of switching between the open and closed states of the gate. This mode would rely on the dissimilar gate penetration properties of electrons and ions in the presence of a magnetic field, and it may also provide a way to partially compensate for the E × B effect at the sense wires. A combination of these different modes is proposed for the ALEPH TPC.

UR - http://www.scopus.com/inward/record.url?scp=0022876951&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022876951&partnerID=8YFLogxK

U2 - 10.1016/0168-9002(86)91213-1

DO - 10.1016/0168-9002(86)91213-1

M3 - Article

AN - SCOPUS:0022876951

SN - 0168-9002

VL - 252

SP - 403

EP - 406

JO - Nuclear Inst. and Methods in Physics Research, A

JF - Nuclear Inst. and Methods in Physics Research, A

IS - 2-3

ER -

Gating in the ALEPH time projection chamber

Abstract

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