Bibliographic Details
| Title: |
Picosecond Avalanche Detector -- working principle and gain measurement with a proof-of-concept prototype |
| Authors: |
Paolozzi, L., Munker, M., Cardella, R., Milanesio, M., Gurimskaya, Y., Martinelli, F., Picardi, A., Rücker, H., Trusch, A., Valerio, P., Cadoux, F., Cardarelli, R., Débieux, S., Favre, Y., Fenoglio, C. A., Ferrere, D., Gonzalez-Sevilla, S., Kotitsa, R., Magliocca, C., Moretti, T., Nessi, M., Medina, A. Pizarro, Iglesias, J. Sabater, Saidi, J., Pinto, M. Vicente Barreto, Zambito, S., Iacobucci, G. |
| Publication Year: |
2022 |
| Collection: |
Physics (Other) |
| Subject Terms: |
Physics - Instrumentation and Detectors |
| More Details: |
The Picosecond Avalanche Detector is a multi-junction silicon pixel detector based on a $\mathrm{(NP)_{drift}(NP)_{gain}}$ structure, devised to enable charged-particle tracking with high spatial resolution and picosecond time-stamp capability. It uses a continuous junction deep inside the sensor volume to amplify the primary charge produced by ionizing radiation in a thin absorption layer. The signal is then induced by the secondary charges moving inside a thicker drift region. A proof-of-concept monolithic prototype, consisting of a matrix of hexagonal pixels with 100 $\mu$m pitch, has been produced using the 130 nm SiGe BiCMOS process by IHP microelectronics. Measurements on probe station and with a $^{55}$Fe X-ray source show that the prototype is functional and displays avalanche gain up to a maximum electron gain of 23. A study of the avalanche characteristics, corroborated by TCAD simulations, indicates that space-charge effects due to the large primary charge produced by the conversion of X-rays from the $^{55}$Fe source limits the effective gain. |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2206.07952 |
| Accession Number: |
edsarx.2206.07952 |
| Database: |
arXiv |
