Preprint
Characterization of CRYO ASIC for charge readout in the nEXO experiment
ArXiv.org
11 Dec 2025
Abstract
nEXO is a proposed next-generation experiment searching for the neutrinoless double beta decay of$^{136}$ Xe using a tonne-scale liquid xenon (LXe) time projection chamber (TPC). To image the ionization signals from events in the liquid xenon, the detector will employ metallized fused-silica charge collection tiles instrumented with cryogenic application-specific integrated circuits (ASICs), referred to as CRYO ASIC, which are designed to operate directly in LXe to minimize input capacitance and pick-up noise. Here we present the performance of the CRYO ASIC mounted on an auxiliary printed circuit board and evaluated both in a cryogenic environmental chamber and in a dedicated LXe test stand. We demonstrate that the ASICs achieve the desired performance at liquid xenon temperatures, showing a gain stability better than 0.2% over 24-hour operation and reliable in-situ calibration using an on-chip pulser. In the LXe test stand, we show that boiling caused by the chip heat dissipation can be mitigated by operating the system above ~0.1 MPa. The in-LXe noise measured agrees with simulation, which indicates it the$150~e^-$design requirement can be satisfied. These results establish CRYO ASIC as a viable low-noise in-LXe charge readout solution for nEXO.
Metrics
1 Record Views
Details
- Title
- Characterization of CRYO ASIC for charge readout in the nEXO experiment
- Creators
- Z LiM YuE AngelicoA AtencioA GuptaP KnaussA Pena-PerezB. G LenardoP AcharyaA AmyA AnkerI. J ArnquistJ BaneV BelovT BhattaA BolotnikovJ BreslinP. A BreurJ. P BrodskyE BrownT BrunnerB BurnellE CadenG. F CaoL. Q CaoD CesmeciogluD ChernyakM ChiuR CollisterM MarquisT DanielsL DarrochR DeVoeM. L di VacriX DefayY. Y DingD DoeringM. J DolinskiA DragoneB EckertA EmaraN FatemighomiW FairbankB. T FoustD GallacherN GalliceA GaurW GillisF GirardA GorhamK GracequistG GrattaC. A HardyJ HasiS HedgesM HeffnerE HeinH. Hernandez HerreraJ. D HoltA IversonX. S JiangA KarelinD KeblbeckC KenneyI KotovA KuchenkovK. S KumarS LavoieA LarsonM. B LatifK. G LeachD. S LeonardG LessardK. K. H LeungG LiX LiC LicciardiR LindsayR MacLellanS MajidiC MalbrunotB MarkovicJ MasbouM Medina-PeregrinaS MngonyamaB MongD. C MooreK NiI NituA NolanS. C NowickiJ. C. Nzobadila OndzeA OdianJ. L OrrellG. S OrtegaL PaganiH. Peltz SmalleyA PiepkeA PocarS PrenticeV RadekaE RaguzinR RaiH RasiwalaD RayB ReeseS ResciaF RetiereG RichardsonV RiotR RossL RotaP. C RowsonR SaldanhaS SangiorgioS SekulaT ShettyL SiF SpadoniV StekhanovX. L SunS ThibadoT TotevS TriambakR. H. M TsangO. A TyukaT. Vallivilayil JohnE van BruggenM VidalS VielM WalentH WangQ. D WangM WattsW WeiM WehrfritzL. J WenS WildeX. M WuH XuH. B YangL YangO ZeldovichJ Zhao
- Publication Details
- ArXiv.org
- Resource Type
- Preprint
- Language
- English
- Academic Unit
- Physics
- Other Identifier
- 991022145517004721