A gating grid driver for time projection chambers
- Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. Dept. of Physics and Astronomy
- Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
- Tsinghua Univ., Beijing (China). Dept. of Physics
- RIKEN Nishina Center, Wako (Japan)
- Kyoto Univ. (Japan). Dept. of Physics
- Beijing Normal Univ. (China). College of Nuclear Science and Technology
A simple but novel driver system has been developed to operate the wire gating grid of a Time Projection Chamber (TPC). This system connects the wires of the gating grid to its driver via low impedance transmission lines. When the gating grid is open, all wires have the same voltage allowing drift electrons, produced by the ionization of the detector gas molecules, to pass through to the anode wires. When the grid is closed, the wires have alternating higher and lower voltages causing the drift electrons to terminate at the more positive wires. Rapid opening of the gating grid with low pickup noise is achieved by quickly shorting the positive and negative wires to attain the average bias potential with N-type and P-type MOSFET switches. The circuit analysis and simulation software SPICE shows that the driver restores the gating grid voltage to 90% of the opening voltage in less than 0.20 µs, for small values of the termination resistors. When tested in the experimental environment of a time projection chamber larger termination resistors were chosen so that the driver opens the gating grid in 0.35 µs. In each case, opening time is basically characterized by the RC constant given by the resistance of the switches and terminating resistors and the capacitance of the gating grid and its transmission line. By adding a second pair of N-type and P-type MOSFET switches, the gating grid is closed by restoring 99% of the original charges to the wires within 3 µs.
- Research Organization:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- SπRIT collaboration
- Grant/Contract Number:
- SC0004835; SC0014530
- OSTI ID:
- 1534166
- Alternate ID(s):
- OSTI ID: 1398535; OSTI ID: 1957963
- Journal Information:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 853; ISSN 0168-9002
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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journal | May 1979 |
The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC
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journal | March 2003 |
The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
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journal | October 2010 |
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journal | July 1999 |
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book | January 2008 |
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journal | December 2003 |
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journal | January 1999 |
A TPC detector for the study of high multiplicity heavy ion collisions
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journal | April 1990 |
Physics opportunities with the RI Beam Factory at RIKEN
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journal | November 2007 |
Beam commissioning of the SπRIT time projection chamber
|
journal | July 2016 |
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