A low noise and high dynamic charge sensitive amplifier-shaper associated with Silicon Strip Detector for compton camera in hadrontherapy

Dahoumane, M.; Dauvergne, D.; Krimmer, J.; Mathez, H.; Ray, C.; Testa, É.; Walenta, A.H.; Zoccarato, Y.

doi:10.1109/nssmic.2012.6551351

Cited by 6 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Each DSSD is 96 × 9.6 × 2 mm 3 in size, with 64 strips on each side. Dedicated low-noise, large dynamics and high count-rate capability micro-electronics front-end was designed and successfully tested [28]. The absorber detector is the same as for the collimated camera, i.e.…”

Section: Device Developmentsmentioning

confidence: 99%

Prompt-Gamma Monitoring of Proton- and Carbon-Therapy. Combined Development of Time-of-Flight Collimated- and Compton-Cameras

et al. 2015

Self Cite

View full text Add to dashboard Cite

Prompt-gamma imaging during ion therapy has proven its ability to control the ion range in real time. The achievable precision is of the order of the millimeter for a single spot in proton pencil beam scanning. Collimated gamma cameras have been developed, that are close to clinical application. The Compton cameras are also under development in various laboratories. Time of ight enables the reduction of the background due to other prompt radiations.

show abstract

Section: Device Developmentsmentioning

confidence: 99%

Prompt-Gamma Monitoring of Proton- and Carbon-Therapy. Combined Development of Time-of-Flight Collimated- and Compton-Cameras

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…The detector, with a capacitance C d , produces charge pulses that are integrated on the CSA feedback capacitor C f [5], [6], [7]. …”

Section: Design Architecturementioning

confidence: 99%

“…Classical cascode architecture has been chosen to implement the CSA stage of the readout [5], [8]. The geometry of each component is optimized for the foreseen performances.…”

Section: A the Charge Sensitive Amplifier (Csa) Descriptionmentioning

confidence: 99%

“…The value of C f (250 fF) is fixed by the maximum signal of the dynamic range and the power supply voltage value which is 3.3 V in 0.35 µm CMOS process we used. An NMOS input transistor has been chosen to get a better power supply rejection ratio and higher speed than the PMOS one (more details were reported in the previous version of this design [5]). In order to minimize the ballistic deficit, G 0 C f has to be very superior to C d (G 0 C f >>C d ), where G 0 is the open loop gain of the CSA, C f the feedback capacitance and C d the detector capacitance.…”

Section: A the Charge Sensitive Amplifier (Csa) Descriptionmentioning

confidence: 99%

“…2 shows a block diagram of a single channel of the circuit which is AC-coupled with a double sided DSSD detector. According to signal-to-noise ratio, and number of integrated functionalities, this circuit is an improved version and a complete system in comparison with the results of a previous version [5]. Each channel includes a Charge Sensitive Amplifier (CSA) followed by two parallel shapers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A low noise and high dynamic range CMOS integrated Electronics associated with double sided Silicon Strip Detectors for a Compton camera gamma-ray detecting system

Dahoumane

Dauvergne

Krimmer

et al. 2014

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

Self Cite

View full text Add to dashboard Cite

An 8-channel Front End integrated Electronics (FEE) circuit is designed and fabricated using the AMS-CMOS 0.35 µm process to equip a Compton camera system for quality control in Hadrontherapy. The circuit provides the energy deposited by prompt rays interacting in a 2 mm thick Double sided Silicon Strip Detector (DSSD), the (x,y,z) space coordinates and the time of the interaction. Each channel includes a Charge Sensitive Amplifier (CSA) followed by two parallel shapers. Slow and fast shapers, with 1 s and 15 ns shaping time are used to measure the energy and time stamping, respectively. In order to increase the detection efficiency, a 3 bit multi-gain configuration is chosen to implement the fast shaper. The output of the latter is sent to a voltage comparator which provides a digital signal used as event time stamp and resetting signal of the CSA feedback capacitor to avoid pileup or circuit saturation. A 5 bit DAC is integrated to compensate any comparator offset dispersion between channels. A programmable digital circuit is also integrated in this design to adjust the delay and the width of the reset signal. All configuration settings are controlled by an I2C interface circuit which is integrated in the circuit. The present design provides the readout of the two sides of the DSSD thanks to a hole or electron configurable system. All the functionalities of the design have been successfully tested and validated. The test results are in good agreement with analytical and simulation calculations. A high linearity over a range of 3×10 3 to 3×10 6 electrons is reached with a conversion gain of 3.6 mV/fC. The circuit (CSA output) achieves an ENC (Equivalent Noise Charge) of 290 electrons rms. The circuit dissipates 23 mW/channel and occupies an area of 2×4.5 mm 2 , including pads.

show abstract

Instrumentation pour le suivi en ligne des traitements par hadronthérapie

Reithinger¹,

Balleyguier²,

Baudot³

et al. 2020

Instrumentation Et Interdisciplinarité

Self Cite

View full text Add to dashboard Cite

show abstract

A low noise and high dynamic charge sensitive amplifier-shaper associated with Silicon Strip Detector for compton camera in hadrontherapy

Cited by 6 publications

References 9 publications

Prompt-Gamma Monitoring of Proton- and Carbon-Therapy. Combined Development of Time-of-Flight Collimated- and Compton-Cameras

Prompt-Gamma Monitoring of Proton- and Carbon-Therapy. Combined Development of Time-of-Flight Collimated- and Compton-Cameras

A low noise and high dynamic range CMOS integrated Electronics associated with double sided Silicon Strip Detectors for a Compton camera gamma-ray detecting system

Instrumentation pour le suivi en ligne des traitements par hadronthérapie

Contact Info

Product

Resources

About