The experimental set-up of the RIB in-flight facility EXOTIC

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• 作者：D. Pierroutsakou^a ; ^{pierroutsakou@na.infn.it" class="auth_mail" title="E-mail the corresponding author} ; A. Boiano^a ; C. Boiano^b ; P. Di Meo^a ; M. La Commara^c ; ^a ; C. Manea^d ; M. Mazzocco^e ; ^d ; M. Nicoletto^d ; C. Parascandolo^a ; C. Signorini^e ; ^d ; F. Soramel^e ; ^d ; E. Strano^e ; ^d ; N. Toniolo^f ; D. Torresi^e ; ^d ; G. Tortone^a ; A. Anastasio^a ; M. Bettini^d ; C. Cassese^a ; L. Castellani^d ; D. Corti^d ; L. Costa^f ; B. De Fazio^c ; G. Galet^e ; ^d ; T. Glodariu^g ; J. Grebosz^h ; A. Guglielmettiⁱ ; ^b ; P. Molini^e ; ^d ; G. Pontoriere^a ; R. Rocco^a ; M. Romoli^a ; L. Roscilli^a ; M. Sandoli^c ; ^a ; L. Stroe^g ; M. Tessaro^d ; P.G. Zatti^d
• 关键词：Radioactive Ion Beams ; Tracking and position-sensitive detectors ; Charged-particle detection array ; Low-noise electronics ; ASIC electronics ; Data conversion and acquisition
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：21 October 2016
• 年：2016
• 卷：834
• 期：Complete
• 页码：46-70
• 全文大小：9069 K

文摘

We describe the experimental set-up of the Radioactive Ion Beam (RIB) in-flight facility EXOTIC consisting of: (a) two position-sensitive Parallel Plate Avalanche Counters (PPACs), dedicated to the event-by-event tracking of the produced RIBs and to time of flight measurements and (b) the new high-granularity compact telescope array EXPADES (EXotic PArticle DEtection System), designed for nuclear physics and nuclear astrophysics experiments employing low-energy light RIBs. EXPADES consists of eight ΔE–E_res$\mathrm{\Delta }E–E_{\mathit{res}}$ telescopes arranged in a cylindrical configuration around the target. Each telescope is made up of two Double Sided Silicon Strip Detectors (DSSSDs) with a thickness of 40/60 μm and 300 μm for the ΔE$\mathrm{\Delta }E$ and E_res layer, respectively. Additionally, eight ionization chambers were constructed to be used as an alternative ΔE$\mathrm{\Delta }E$ stage or, in conjunction with the entire DSSSD array, to build up more complex triple telescopes. New low-noise multi-channel charge-sensitive preamplifiers and spectroscopy amplifiers, associated with constant fraction discriminators, peak-and-hold and Time to Amplitude Converter circuits were developed for the electronic readout of the ΔE$\mathrm{\Delta }E$ stage. Application Specific Integrated Circuit-based electronics was employed for the treatment of the E_res signals. An 8-channel, 12-bit multi-sampling 50 MHz Analog to Digital Converter, a Trigger Supervisor Board for handling the trigger signals of the whole experimental set-up and an ad hoc data acquisition system were also developed. The performance of the PPACs, EXPADES and of the associated electronics was obtained offline with standard α calibration sources and in-beam by measuring the scattering process for the systems ¹⁷O+⁵⁸Ni and ¹⁷O+²⁰⁸Pb at incident energies around their respective Coulomb barriers and, successively, during the first experimental runs with the RIBs of the EXOTIC facility.