The CERN Neutrino Platform. Paola Sala CERN and INFN Milano For the NP team 09/09/2016 Neutrino Platform NOW2016 1

Transcription

1 The CERN Neutrino Platform Paola Sala CERN and INFN Milano For the NP team 09/09/2016 Neutrino Platform NOW2016 1

2 Accelerator neutrinos in the world SBN (short baseline) T2K upgrade CP violation, Mass Hierarchy, θ23 octant and precision, 3-flavor model, Atmospheric Proton decay Supernova interactions DUNE European Strategy : CERN should develop a neutrino program to pave the way for a substantial European role in future long-baseline experiments The CERN Neutrino Platform 09/09/2016 Neutrino Platform NOW2016 2

3 What is NP? Launched by CERN council in 2014 A support structure for all these activities A support Laboratory for all European Groups interested in a collaborative effort A unique R&D and tests facility of detectors and components (hardware and software) A research group active at these facilities The CERN Theory group contributes to this activity by supporting an associated activity in theoretical neutrino physics. CENF-TH thdep-cern-neutrino-platform 09/09/2016 Neutrino Platform NOW2016 3

4 Neutrino Platform Projects 6 Projects presented to the SPSC, 5 already approved as experiments at CERN: NP01: WA104, ICARUS as far detector for FNAL short baseline NP02: WA105, double phase LAr-TPC demonstrator + ProtoDUNE DP engineering prototype for a double phase LAr-TPC for DUNE NP03: PLAFOND, general R&D framework NP04: ProtoDUNE SP, engineering prototype for a single phase LAr-TPC for DUNE NP05: Baby Mind, a muon spectrometer for the WAGASCI experiment at T2K LOI243 ArgonCube: a modular LAr-TPC R&D More that 50 European Institutions participating and well as many US Institutions 09/09/2016 Neutrino Platform NOW2016 4

5 Neutrino Platform : LAr detectors Single-phase and dual-pahase technologies to be evaluated for DUNE 09/09/2016 Neutrino Platform NOW2016 5

6 NP01: overhauling of ICARUS T600 Joint INFN/CERN/US WA104 program: T600 is being upgraded at CERN, with the introduction of technological developments, also to match the additional requirement of operating on surface with high interaction rates and CR background: New light collection system with high efficiency PMT s New j-fet based low noise (<10 3 el.) warm electronics, Internal cabling and wire biasing components; Flattening of existing cathode panels; New LAr containers and purely passive insulation bed; Refurbished cryogenics system New Re-generable (Copper based) purification filters. See G. Raselli talk on the T600 overhauling The Cosmic Ray Tagger and filtering/selection tools are developed at the CERN Neutrino Platform jointly with the three SBN collaborations. 09/09/2016 Neutrino Platform NOW2016 6

7 NP01: T600 delivery to FNAL early 2017, installation and commissioning during 2017 New aluminum cold vessel being assembled at CERN TPC cabling / cold biasing circuitry Cathode planarity 380 PMTs New purification system efficiency study New readout board, feed through flange and compact crate 09/09/2016 Neutrino Platform NOW2016 7

8 WA104 (NP01 Icarus) : cosmic ray tagger Cosmic Ray Tagger options studied in FLUKA simulations: See G. Raselli talk on the T600 overhauling 99.9% coverage efficiency 80% coverage efficiency 4-π option (composed of 10 scintillating planes/walls). Expected rate of cosmic events giving a signal in the CRT system is 35 khz. CRT top unit (composed of 5 scintillating planes/walls: one just below the concrete and 4 inclined: ~432 m 2 ). Expected rate of cosmic events 28 khz 09/09/2016 Neutrino Platform NOW2016 8

9 A proposal for CRT top unit, here with T600 in the experimental hall 09/09/2016 Neutrino Platform NOW2016 9

10 Single XY-module composed by 8 scintillator bars in X and Y directions, in total 16 bars. Fiber-SiPM connector Proposed layout Fiber SiPM PCB holder with microcoaxial connector 1853 mm Fiber-SiPM coupling ensured by dedicated connectors as designed by Baby-MIND collaboration (also at NP) Electronics boards as in the SBN Near Detector (developed by Bern University, commercialized by CAEN) 80% geometrical efficiency Background to e search in three years: events in fiducial 200 after software cuts 50 with this CRT + software + input for reconstruction of cosmic in TPC 1500 events from beam ν e expected signal around 500 events 09/09/2016 Neutrino Platform NOW

11 The new cryostat paradigm: membrane: SBN and DUNE First prototype at CERN: vessel for the WA105 3x1x1 m 3 detector: Designed and funded by CERN (70%) and ETHZ (30%) GTT membrane technology (developed for Liquefied gas tanks and ships) Validation for ultra-high purity (leak detection tests, piston purge prior filling) Now ready for operation Insulation: 5-7 W/m /09/2016 Neutrino Platform NOW2016

12 Construction of the 3x1x1 dual phase LAr TPC at CERN. Operational this fall. First step towards the realisation of 10 kton dual phase LAr TPCs. Readout plane at the top of the detector, drifting electrons extracted from liquid to gas, accelerated and multiplied before readout PMTs Topcap Charge readout plane Field cage NIM A617 (2010) NIM A641 (2011) JINST 7 (2012) P08026 JINST 8 (2013) P04012 JINST 9 (2014) P03017 JINST 10 (2015) P /09/2016 Neutrino Platform NOW

13 ProtoDUNEs (NP02/NP04) Detector Engineering: full scale detector components, installation, operation Infrastructure Cryogenics etc Physics Measurements / detector calibration Exposure to charged particle beam to cover energy range and particle types as expected for DUNE ν interactions GeV/c, Mixed hadrons and electrons <100 Hz rate, slow extraction Tertiary beams from SPS Beam instrumentation: joint effort CERN and FNAL: PID, tracking, momentum MUST BE READY FOR BEAM MID-2018 ( before CERN long shutdown) 09/09/2016 Neutrino Platform NOW

14 Experimental area North Area EHN1 extension (~ m 3 ) Now real: handover of the building done 05 Sep 2016 SPS extracted beam 09/09/2016 Neutrino Platform NOW

15 NP02 and NP04 Foreseen placement in H1N1 extension, in two pits ~770 tons each ~10x10x10m 09/09/2016 Neutrino Platform NOW

16 Integration drawing with beam lines H2 beamline to NP02, Entrance from one corner Beamlines optics ready Instrumentation being defined H4 beamline to NP04,Three possible entrance positions 09/09/2016 Neutrino Platform NOW

17 August 2016: Starting the construction of NP04 in the pit Now building external structure External company will install insulation NP02 pit Both cryostats ready April 2017 Work area NP04 Final position 09/09/2016 Neutrino Platform NOW

18 NP04: detector integration Definition of installation procedures and tooling construction. Example: Integration and tests of APA, CE and PD in clean room Perform warm and cold testing (dedicated cold-box) Insert APA through TCO into cryostat Retest APA once installed in final position Cold box for NP04 APA integration tests 09/09/2016 Neutrino Platform NOW

19 NP04: examples of design and R&D at CERN Field cage: Modular concept constructed from: Open roll formed Al or SS profiles (Purity) Shape chosen to minimize e-field intensity Plastic caps to prevent discharges Fiberglass I-beams support Ground planes on top and bottom Similar design for NP02 as well Functional tests at CERN in purified LAr: No sparks observed up to 100 kv (6.6 cm gap twice the real field ) Occasional sparks above 80 kv if bubbles present Cathode: FR4 planes laminated with resistive kapton (double sided): 1-10 MOhm/square to dump possible damage to detector / electronics due to accidental HV break-down 09/09/2016 Neutrino Platform NOW2016 Dedicated tests at CERN in pure LAr allowed verifying: Robustness to sparks Ageing in cryogenic environment Lamination stability in LAr LAr purity compatibility 19

20 Data Acquisition exploring the possibility to develop with LHC a new DAQ system based on the ATLAS FELIX concept. A kickoff meeting has happen already and work is starting. A CERN support group has been setup. FELIX : 09/09/2016 Neutrino Platform NOW

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22 Physics simulations for engineering / instrumentation Simulations performed at CERN with FLUKA are driving the design of the beam penetrations inside cryostat and field cage The same, validated the design of the cathode as a thin layer supported by frames penetration plug E kin at entrance in active volume Full penetration Plug up to field cage No plug in LAr Presently working on the effect of beam instrumentation materials on low enegy particle beams 09/09/2016 Neutrino Platform NOW

23 ProtoDUNE full simulation Geometry of ProtoDUNE SP in FLUKA Preparing interface to LArSoft: will allow to couple with reco tools In the meanwhile, ongoing studies on containment, calibration, had/em deposited energy, scatterings and energy loss in the materials upstream Average energy deposition in ProtoDUNE SP, 1 GeV/c protons Top view 09/09/2016 Neutrino Platform NOW

24 Reconstruction and analysis Group actively involved in the development of reconstruction tools: See Dorota Stefan s talk 09/09/2016 Neutrino Platform NOW

25 ArgonCube: a Modular LArTPC Proposal (Bern) as alternative design for (Magnetized) DUNE Near Detector: Shorter drift-times - Less stringent purity, less pileup & lower voltage Light contained - Less optical pileup, accurate trigger & veto Pixel readout - Live 3D reconstruction with reduced ambiguities Several modules sharing the same LAr bath. Modular prototype under construction: Containing 4 modules: 1 x Reference wire readout (Sheffield) 3 x Pixel readout (Bern, CERN) Engineering (Bern, CERN) First TPC tests in the fall of Using pixel demonstrator TPC 09/09/2016 Neutrino Platform NOW2016 CERN-SPSC One Module: 2 m x 2 m x 3 m 1 m drift length 25

26 Pixel Readout: Initial Successful Test Preliminary Courtesy of LHEP-Bern 2.86 mm pitch, 28 inductive regions, 36 pixels per region, 64 channels Demonstrated operation in LAr at 60 kv, triggering on cosmics and Co60. Successful triggering on scintillation light (cold SiPM). 09/09/2016 Neutrino Platform NOW cm drift at 60 kv, 1 kv/cm. Cold BNL pre-amps. Bias focusing adjustable from 0 V to 300 V 26 Successful readout from pixel plain.

27 NP5 Baby MIND (Magnetized Iron Neutrino Detector) project Initial study within FP7-AIDA and LBNO Modularity in design simplifies proposed use at various facilities, downstream of: WAGASCI at J-PARC (2016 onwards) : rejection of nu-mu background in anti-nu mu beam: anti-nu selection efficiency > 90% for P m >300 MeV/c. HyperK near detector: larger MIND detector downstream of water-based near detector under discussion. LAr (WA105) (>2017): Use of MIND detectors integrated from start for studies of Long Baseline experiments in Europe (LBNO): muon charge ID and momentum, tail catching of hadronic showers. ANNIE at Fermilab, nustorm, NUFACT... Baby MIND EHN1 extension J-PARC Baby MIND 09/09/2016 Neutrino Platform NOW

28 Interleaving of magnet and scintillator modules d: detector module s: steel magnet module d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 d17 [s1-3] [s4] [s5][s6] [s7-8][s9-10] [s11-12][s13-15] [s16-18][s19-21][s22-24][s25-27][s28-30][s31-33] 10 Gaps to improve angular resolution with lever arm Magnet module Thicker steel to better resolve angular deflection by B-field from angular deflection by M.S. Thinner steel here to improve cross-calibration of detector: i.e. momentum resolution by range vs B-field 09/09/2016 Neutrino Platform NOW2016 scintillator module 28

29 Project milestones Electronics Front End Board beam test at T9 in June First complete Baby-MIND module in September Delivery of remaining scintillators in October Magnet modules ready on the T9 platform end of February Detector modules ready on the T9 platform end of March Beam tests characterization at T9 in May Shipment to Japan in July Installation in Japan ND280 pit in September for operation in October /09/2016 Neutrino Platform NOW

30 Summary The CERN Neutrino Platform is a unique R&D framework for the International Neutrino community. Immediate physics potential with the exploitation of the short baseline at FNAL and the T2K new near detector. Major contribution to the infrastructure of LBNF Design and construction of new large detector prototypes Generic R&D on new detectors and data handling Participation in the construction, commissioning and physics exploitation of the new neutrino facilities 09/09/2016 Neutrino Platform NOW