Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry

D. W. Stracener; D. G. Sarantites; L. G. Sobotka; J. Elson; J. T. Hood; Z. Majka; V. Abenante; A. Chbihi; D. C. Hensley

doi:10.1016/0168-9002(90)90290-M

Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry

D. W. Stracener, D. G. Sarantites, L. G. Sobotka, J. Elson, J. T. Hood, Z. Majka, V. Abenante, A. Chbihi, D. C. Hensley

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113 Scopus citations

Abstract

A 4π multidetector intermediate mass fragment and charged particle spectrometer is described. It consists of the Dwarf Ball section with 65 CsI(Tl) plastic scintillator phoswiches closely packed to cover the angular range of 32°-168°, and the Dwarf Wall section, with 40 CsI(Tl) plastic phoswiches covering the angular range of 4°-32°. For each detector that fires, three regions of the photomultiplier anode current are separately integrated; one at early times for the fast plastic ΔE, another at intermediate times for the bulk of the signal from the CsI(Tl), and a third in the tail region of the CsI(Tl) signal. In addition, the times are recorded for each detector that fires. From this information, ^1,2,3H, ^3,4He and the elements from Li to Mn can be identified and their energies measured over a large dynamic range. The geometry, construction, energy calibration, gain stability, associated electronics, and an approximate light charged particle identification procedure are discussed. Examples of the performance of the spectrometer from heavy-ion induced reaction experiments are given. The capabilities of this device as a channel selecting device in conjunction with the spin spectrometer are also discussed.

Original language	English
Pages (from-to)	485-503
Number of pages	19
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	294
Issue number	3
DOIs	https://doi.org/10.1016/0168-9002(90)90290-M
State	Published - Sep 15 1990
Externally published	Yes

Funding

The excellent cooperation and the fine craftmanship of the staff of the Department of Chemistry Machine ShopatWashington University during the construction of the Dwarf system is greatly appreciated. This work was supportedinpart by the U.S. Department of En-ergy under contract nos. DE-FG02-88ER-4û4O6 and DE-FG02-87ER40316. L.G.S. acknowledges support from a U.S. Presidential YoungInvestigator award. Oak Ridge National Laboratory is operated by Martin Marietta Energy Systems Inc. underContract No. DE- AC05-840R21400 with the U.S. Department of Energy.

Funders	Funder number
U.S. Department of Energy	DE-FG02-87ER40316, DE-FG02-88ER-4û4O6

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Stracener, D. W., Sarantites, D. G., Sobotka, L. G., Elson, J., Hood, J. T., Majka, Z., Abenante, V., Chbihi, A., & Hensley, D. C. (1990). Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 294(3), 485-503. https://doi.org/10.1016/0168-9002(90)90290-M

Stracener, D. W. ; Sarantites, D. G. ; Sobotka, L. G. et al. / Dwarf Ball and Dwarf Wall : Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1990 ; Vol. 294, No. 3. pp. 485-503.

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title = "Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry",

abstract = "A 4π multidetector intermediate mass fragment and charged particle spectrometer is described. It consists of the Dwarf Ball section with 65 CsI(Tl) plastic scintillator phoswiches closely packed to cover the angular range of 32°-168°, and the Dwarf Wall section, with 40 CsI(Tl) plastic phoswiches covering the angular range of 4°-32°. For each detector that fires, three regions of the photomultiplier anode current are separately integrated; one at early times for the fast plastic ΔE, another at intermediate times for the bulk of the signal from the CsI(Tl), and a third in the tail region of the CsI(Tl) signal. In addition, the times are recorded for each detector that fires. From this information, 1,2,3H, 3,4He and the elements from Li to Mn can be identified and their energies measured over a large dynamic range. The geometry, construction, energy calibration, gain stability, associated electronics, and an approximate light charged particle identification procedure are discussed. Examples of the performance of the spectrometer from heavy-ion induced reaction experiments are given. The capabilities of this device as a channel selecting device in conjunction with the spin spectrometer are also discussed.",

author = "Stracener, {D. W.} and Sarantites, {D. G.} and Sobotka, {L. G.} and J. Elson and Hood, {J. T.} and Z. Majka and V. Abenante and A. Chbihi and Hensley, {D. C.}",

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Stracener, DW, Sarantites, DG, Sobotka, LG, Elson, J, Hood, JT, Majka, Z, Abenante, V, Chbihi, A & Hensley, DC 1990, 'Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 294, no. 3, pp. 485-503. https://doi.org/10.1016/0168-9002(90)90290-M

Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry. / Stracener, D. W.; Sarantites, D. G.; Sobotka, L. G. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 294, No. 3, 15.09.1990, p. 485-503.

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

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T2 - Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry

AU - Stracener, D. W.

AU - Sarantites, D. G.

AU - Sobotka, L. G.

AU - Elson, J.

AU - Hood, J. T.

AU - Majka, Z.

AU - Abenante, V.

AU - Chbihi, A.

AU - Hensley, D. C.

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N2 - A 4π multidetector intermediate mass fragment and charged particle spectrometer is described. It consists of the Dwarf Ball section with 65 CsI(Tl) plastic scintillator phoswiches closely packed to cover the angular range of 32°-168°, and the Dwarf Wall section, with 40 CsI(Tl) plastic phoswiches covering the angular range of 4°-32°. For each detector that fires, three regions of the photomultiplier anode current are separately integrated; one at early times for the fast plastic ΔE, another at intermediate times for the bulk of the signal from the CsI(Tl), and a third in the tail region of the CsI(Tl) signal. In addition, the times are recorded for each detector that fires. From this information, 1,2,3H, 3,4He and the elements from Li to Mn can be identified and their energies measured over a large dynamic range. The geometry, construction, energy calibration, gain stability, associated electronics, and an approximate light charged particle identification procedure are discussed. Examples of the performance of the spectrometer from heavy-ion induced reaction experiments are given. The capabilities of this device as a channel selecting device in conjunction with the spin spectrometer are also discussed.

AB - A 4π multidetector intermediate mass fragment and charged particle spectrometer is described. It consists of the Dwarf Ball section with 65 CsI(Tl) plastic scintillator phoswiches closely packed to cover the angular range of 32°-168°, and the Dwarf Wall section, with 40 CsI(Tl) plastic phoswiches covering the angular range of 4°-32°. For each detector that fires, three regions of the photomultiplier anode current are separately integrated; one at early times for the fast plastic ΔE, another at intermediate times for the bulk of the signal from the CsI(Tl), and a third in the tail region of the CsI(Tl) signal. In addition, the times are recorded for each detector that fires. From this information, 1,2,3H, 3,4He and the elements from Li to Mn can be identified and their energies measured over a large dynamic range. The geometry, construction, energy calibration, gain stability, associated electronics, and an approximate light charged particle identification procedure are discussed. Examples of the performance of the spectrometer from heavy-ion induced reaction experiments are given. The capabilities of this device as a channel selecting device in conjunction with the spin spectrometer are also discussed.

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Stracener DW, Sarantites DG, Sobotka LG, Elson J, Hood JT, Majka Z et al. Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1990 Sep 15;294(3):485-503. doi: 10.1016/0168-9002(90)90290-M

Dwarf Ball and Dwarf Wall: Design, instrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry

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