Towards a Scintillator-based (semi)Digital HCal

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Presentation transcript:

Towards a Scintillator-based (semi)Digital HCal Vishnu V. Zutshi for the NICADD/NIU group

Calice DHCal Meeting, DESY Introduction Can a reasonable case for a scintillator-based (semi)digital HCal (~ 9cm2 cells) be made? can E resolution be maintained ? is there enough light ? can cell processing be simplified ? can Eflow algorithms be developed ? Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Energy Resolution ? Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY N vs. E 0.25mip threshold Calice DHCal Meeting, DESY 11/3/2019

Single Particle E Resolution Non-projective geometry Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Digital vs. Analog Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Multiple thresholds Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY ZZ Events Stable MC particles Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Recipe Energy Smearing Fit s as a function of incident E (slide5) and smear neutral hadrons accordingly g ~ 17%/sqrt(E), generated E for charged hadrons Jet Reconstruction pT order stable MC particles (ignoring neutrinos) start with highest pT particle and cluster in 0.7 cone repeat for remaining particles Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Energy Fractions Neutral hadron fraction g fraction Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Jet E Resolution rms used Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Layer Stack Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Enough Light ? Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Cosmic Data with PMT ~11 p.e Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Si-PM’s Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Cosmic Data with Si-PM Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Cosmic with APD Hamamatsu S8550 Calice DHCal Meeting, DESY 11/3/2019

Tile-Fiber Processing Calice DHCal Meeting, DESY 11/3/2019

Surface Treatment/Wrapping UNPOLISHED TOP AND POLISHED BOTTOM POLISHED TOP AND UNPOLISHED BOTTOM 0.98 1.00 1.02 Tyvek Paint VM 2002 Mylar CM590 CM500 Alum Foil 1.00 0.89 1.08 0.83 0.28 0.44 0.63 Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Spray It On Titanium white acrylic Calice DHCal Meeting, DESY 11/3/2019

Miscellaneous Measurements 6cm2/9cm2 Straight/Sigma Square/Hex Extruded/Cast 0.95 0.94 0.7 NICADD scintillator 1mm round Kurray After/Before glue EJ500/BC600 (optical glues) Y11/BCF92 1.15 1.0 3.1 0.8 mm square Bicron Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Response vs. Thickness Calice DHCal Meeting, DESY 11/3/2019

MEPHI-ITEP-DESY Solution Can the cost be further reduced? Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Thickness Tolerances ELJEN cast NICADD extruded Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Response Dispersion Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Digital Eflow? Calice DHCal Meeting, DESY 11/3/2019

Density-based Clustering S+  pp0 Eflow Density weighted Cal only Calice DHCal Meeting, DESY 11/3/2019

Photon Reconstruction Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Jet Resolution 60% better eflow Cal only Calice DHCal Meeting, DESY 11/3/2019

Calice DHCal Meeting, DESY Summary It is reasonable to consider a scintillator-based (semi)digital HCal (~ 9cm2 cells) E resolution can be maintained there is enough light cell processing can be simplified digital Eflow algorithms can be developed Calice DHCal Meeting, DESY 11/3/2019