Camera Design and Performance of the Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array

Adams, C.; Ambrosi, G.; Ambrosio, M.; Aramo, C.; Benbow, W.; Bertucci, B.; Bissaldi, E.; Bitossi, M.; Boiano, A.; Bonavolontà, C.; Bose, R.; Brill, Ari; Buckley, J. H.; Caprai, M.; Venere, L. Di; Feng, Q.; Fiandrini, E.; Giglietto, N.; Giordano, F.; Hervet, O.; Hughes, G.; Humensky, T. B.; Ionica, M.; Jin, W.; Kaaret, P.; Kieda, D.; Kim, B.; Licciulli, F.; Loporchio, Serena; Masone, V.; Meures, T.; Mode, B. A. W.; Mukherjee, R.; Pantaleo, F. R.; Okumura, A.; Petrashyk, A.; Powell, J. R.; Paoletti, R.; Ribeiro, D.; Rugliancich, A.; Santander, M.; Shang, R. C.; Stevenson, B.; Stiaccini, Leonardo; Taylor, L.; Tosti, Luca; Vagelli, V.; Valentino, M.; Vandenbroucke, J.; Vassiliev, V. V.; Wilcox, P.; Williams, D. A.

doi:10.22323/1.358.0807

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The heat management system on the pSCT will also be upgraded with a more powerful design, capable of cooling the fully populated camera. More detailed information about the upgrade to the camera can be found in [13]. Currently, the optical system is undergoing finer calibration as our alignment techniques improve [14].…”

Section: Psct Upgrade and Technical Improvementsmentioning

confidence: 99%

Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Adams¹,

Ambrosi²,

Ambrosio³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Section: Psct Upgrade and Technical Improvementsmentioning

confidence: 99%

Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Adams¹,

Ambrosi²,

Ambrosio³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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“…The SCT matrices were originally produced to equip the Schwarzschild-Couder medium-size Telescope proposed for the Cherenkov Telescope Array [21]. A single matrix holds 16 FBK NUV-HD3 SiPMs of ∼ 6×6 mm 2 (nominal chip size: 6.24×6.24 mm 2 ), with a ∼ 0.5 mm gap between adjacent SiPMs (Figure 1a).…”

Section: Lasip Prototypementioning

confidence: 99%

Large-Area SiPM Pixels (LASiPs): a cost-effective solution towards compact large SPECT cameras

Guberman,

Paoletti,

Rugliancich

et al. 2021

Preprint

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Single Photon Emission Computed Tomography (SPECT) scanners based on photomultiplier tubes (PMTs) are still largely employed in the clinical environment. A standard camera for full-body SPECT employs ∼ 50-100 PMTs of 4-8 cm diameter and is shielded by a thick layer of lead, becoming a heavy and bulky system that can weight a few hundred kilograms. The volume, weight and cost of a camera can be significantly reduced if the PMTs are replaced by silicon photomultipliers (SiPMs). The main obstacle to use SiPMs in full-body SPECT is the limited size of their sensitive area. A few thousand channels would be needed to fill a camera if using the largest commercially-available SiPMs of 6×6 mm 2 . As a solution, we propose to use Large-Area SiPM Pixels (LASiPs), built by summing individual currents of several SiPMs into a single output. We developed a LASiP prototype that has a sensitive area 8 times larger than a 6×6 mm 2 SiPM. We built a proof-of-concept micro-camera consisting of a 40×40×8 mm 3 NaI(Tl) crystal coupled to 4 LASiPs.We evaluated its performance in a central region of 15 × 15 mm 2 , where we were able to reconstruct images of a 99m Tc capillary with an intrinsic spatial resolution of ∼ 2 mm and an energy resolution of ∼ 11.6% at 140 keV. We used these measurements to validate Geant4 simulations of the system. This can be extended to simulate a larger camera with more and larger pixels, which could be used to optimize the implementation of LASiPs in large SPECT cameras. We provide some guidelines towards this implementation.

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Camera Design and Performance of the Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array

Cited by 2 publications

References 3 publications

Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Large-Area SiPM Pixels (LASiPs): a cost-effective solution towards compact large SPECT cameras

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