Low Noise Preamplifiers/Amplifiers for the Time Projection Chamber

Landis, D.; Adachi, Ryuji; Madden, N.; Goulding, F.S.

doi:10.1109/tns.1982.4335911

Cited by 13 publications

(3 citation statements)

References 2 publications

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“…The preamplifier is essentially identical to the PEP4 [7] design except for the introduction of a reset switch across the feedback capacitor and a simple calibration circuit at the input. Prototypes have been fabricated and tests are currently in progress.…”

Section: Shapermentioning

confidence: 99%

A TPC detector for the study of high multiplicity heavy ion collisions

Rai

Arthur

Bieser

et al. 1990

IEEE Trans. Nucl. Sci.

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Section: Shapermentioning

confidence: 99%

A TPC detector for the study of high multiplicity heavy ion collisions

Rai

Arthur

Bieser

et al. 1990

IEEE Trans. Nucl. Sci.

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“…The signal on the sense wire, primarily induced by the movement of positive ions produced in the avalanche, is mostly collected within about 100 ns; however, a long tail persists while the positive ions move further from the high field region at the sense wire. The preamplifier produces a signal proportional to the accumulated charge but which decays with a 5 jus time constant [Lan82]. The signal is sent via coaxial cable to the shaper amplifiers, which remove the the 5 (is decay, and remove the tail caused by positive ion drift.…”

Section: Signal Processingmentioning

confidence: 99%

Bose-Einstein correlations of pions in e/sup +/e/sup minus/ annihilation at 29 GeV center-of-mass energy

Avery¹

1989

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Measurements of two-and three-particle correlations between like-sign pi ons produced in e + e~ annihilation at 29 GeV center-of-mass energy are pre sented. The analysis is based on data taken during the period 1982-1986 using the TPC/27 detector at PEP. Two-particle correlations are studied as a func tion of Q, the momentum difference as measured in the rest frame of the pion pair, and as a function of qo, the energy difference as measured in the lab frame. The Bose-Einstein enhancement is observed when Q is small even when the en ergy difference, 90, is substantial. This observation provides evidence that the Bose-Einstein correlations are best described by a model that correctly accounts for the relativistic motion of the particle sources. Three-pion correlations are measured both by using a standard three-pion correlation function, and also by using a correlation function for which the correlations between the pairs of pions within the triplet have been subtracted. The observation of three-pion corre lations after pair correlations have been subtracted supports the interpretation that the observed correlations are due to Bose-Einstein interference.

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“…Small, inexpensive amplifiers of this type have been developed by several groups. 15,16 Conventional silicon photodiodes have a capacitance of approximately 10 pF per mm 2 and this leads to a typical noise broadening of 0.4 fC FWHM (see Appendix). This capacitance can be reduced by a factor of 2-3 by the application of a back-bias of several volts, but the resulting current produces a shot noise that results in an overall increase in noise.…”

Section: Solid State Photodetectors --------mentioning

confidence: 99%