Charge reconstruction in large-area photomultipliers
文献类型：期刊论文
| 作者 | Grassi, M.; Montuschi, M.; Baldoncini, M.; Mantovani, F.; Ricci, B.; Andronico, G.; Antonelli, V.; Bellato, M.; Bernieri, E.; Brigatti, A. |
| 刊名 | JOURNAL OF INSTRUMENTATION
 |
| 出版日期 | 2018 |
| 卷号 | 13 |
| 关键词 | Calorimeter methods Liquid detectors Photon detectors for UV, visible and IR photons (vacuum) (photomultipliers HPDs, others) Scintillators, scintillation and light emission processes (solid gas and liquid scintillators) |
| ISSN号 | 1748-0221 |
| DOI | 10.1088/1748-0221/13/02/P02008 |
| 文献子类 | Article |
| 英文摘要 | Large-area PhotoMultiplier Tubes (PMT) allow to efficiently instrument Liquid Scintillator (LS) neutrino detectors, where large target masses are pivotal to compensate for neutrinos' extremely elusive nature. Depending on the detector light yield, several scintillation photons stemming from the same neutrino interaction are likely to hit a single PMT in a few tens/hundreds of nanoseconds, resulting in several photoelectrons (PES) to pile-up at the PMT anode. In such scenario, the signal generated by each PE is entangled to the others, and an accurate PMT charge reconstruction becomes challenging. This manuscript describes an experimental method able to address the PMT charge reconstruction in the case of large PE pile-up, providing an unbiased charge estimator at the permille level up to 15 detected PES. The method is based on a signal filtering technique (Wiener filter) which suppresses the noise due to both PMT and readout electronics, and on a Fourier-based deconvolution able to minimize the influence of signal distortions - such as an overshoot. The analysis of simulated p m t waveforms shows that the slope of a linear regression modeling the relation between reconstructed and true charge values improves from 0.769 +/- 0.001 (without deconvolution) to 0.989 +/- 0.001 (with deconvolution), where unitary slope implies perfect reconstruction. A C++ implementation of the charge reconstruction algorithm is available online at [1]. |
| 学科主题 | Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:000424193900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/297494]  |
| 专题 | 江门中微子实验 |
| 推荐引用方式 GB/T 7714 | Grassi, M.,Montuschi, M.,Baldoncini, M.,et al. Charge reconstruction in large-area photomultipliers[J]. JOURNAL OF INSTRUMENTATION,2018,13. |
| APA | Grassi, M..,Montuschi, M..,Baldoncini, M..,Mantovani, F..,Ricci, B..,...&Votano, L..(2018).Charge reconstruction in large-area photomultipliers.JOURNAL OF INSTRUMENTATION,13. |
| MLA | Grassi, M.,et al."Charge reconstruction in large-area photomultipliers".JOURNAL OF INSTRUMENTATION 13(2018). |
入库方式： OAI收割
来源：高能物理研究所
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