A collaborative effort toward the design of a Near Detector for the new generation of accelerator long-baseline neutrino oscillation experiments

The next generation long-baseline experiments aim to unprecedented systematic accuracy (better than 3%). As demonstrated by current experiments (MINOS, T2K, NOvA), near detector(s) will be a key element to achieve this goal, together with neutrino event generators and complementary measurements/simulations as hadron production.

In the past two decades the European neutrino community has acquired significant know-how in detector technology for a wide range of neutrino physics topics, which is a crucial background to define the best design of a near detector.

CERN proposes to act as a forum for the European effort to understand the needs and requirements for the future generation of Near Detectors and in parallel to contribute to improve the existing neutrino event generators. Even though this study group was initially motivated by the DUNE needs, its goals and participation extend to a larger audience. A wealth of experimental and theoretical activities, ideas, collaborations, is emerging in Europe, some of them already connected with CERN, as for instance the Neutrino theory group, the ArgonCube and BabyMind detector activities, and more recently the Expression of Interest for Near detectors based on gas TPC. Developments from all these efforts can be of interest for the entire Neutrino community and thus be part of a wider project.


This collaborative effort (CENF-ND) will address the physics needs first, without any assumption on the detector technology. The final design of the detector(s) will be then derived by the compromise of the best technology solutions to achieve the desired measurements. The CENF-ND working group will work in close contact with the DUNE Near Detector Concept Study (see also near detector task force and workshops ) with the purpose to actively contribute to the final design. It also aims at fully integrating in this CENF-ND effort the groups active in the preparation and design work of the HyperKamiokande ND system so at to address their needs.

The work will be organised into four working groups. For the various contributions to the current main systematic errors (flux, cross-section modelling, pi0 background) the dedicated WG will address the paths to its reductions and the definition of detector requirements and Monte Carlo generators will be the final deliverable. A fifth working group will identify and support the R&D necessary to implement possible ND concepts.

A preliminary list and purposes of the WG activities is presented below. A separate Twiki page and mailing list have been set up for each WG.

@ Work

If you are interested to join the CERN effort on near detector for neutrino experiments, subscribe to CENF-ND Microsoft Outlook e-mail file.

Current list of members here

Meetings in indico (CERN, Home Projects CENF Near Detectors)

First general vidyo meeting on Tuesday 11th July at 14:00 CEST :

General meeting (via vydio) in September A short mail from each member with expression of interest for one or more (sub) topics would be welcome.

General Meetig at CERN 27th and 28th November * Agenda and registration https://indico.cern.ch/event/674901

General Meetig at CERN 18th April * Agenda https://indico.cern.ch/event/718570


Measurement of neutrino flux

Mailing list: CENF-ND-Wg1 Microsoft Outlook e-mail file

GitLab: gitlab repository for CENF-ND-Wg1Toolbox

The working group will focus on the neutrino flux measurements. Measurements both in-situ and/or with the help of complementary experiments will be considered. Physic studies will be performed to assess advantages and limitations of each approach and define which detector characteristics would be the most suitable to perform the measurement. The WG1 is expected to work in close contact with the WG4 in order to estimate the reduction of the systematic uncertainties for the oscillation analyses.

We are attempting to gather information in this summary spreadsheet for all relevant projects.

Summary spread sheet for projects

more infos...

Cross sections, theory and generators

Mailing list: CENF-ND-Wg2 Microsoft Outlook e-mail file

GitLab: gitlab repository for CENF-ND-Wg2Toolbox

This working group will focus on the capability of theoretical models and Monte Carlo generators to describe neutrino interactions. Starting from a thorough comparison of existing models with experimental data, the group will foster and participate in the improvement of event generators.

more infos...

Cross sections, experimental

Mailing list: CENF-ND-Wg3 Microsoft Outlook e-mail file

GitLab: gitlab repository for CENF-ND-Wg3Toolbox

This working group will focus on the detector effects and designs that are necessary to identify specific neutrino interactions and to measure their cross sections and thus constrain theoretical uncertainties. It will provide input to and work in collaboration with WG4

more infos...

Sensitivity studies

Mailing list: CENF-ND-Wg4 Microsoft Outlook e-mail file

GitLab: gitlab repository for CENF-ND-Wg4Toolbox

This working group will focus on evaluating the impact of experimental and theoretical uncertainties on the experiment sensitivity. It will work in close collaboration with WG2 and WG3 and as part of the DUNE and HyperKamiokande experiments and also learn from already existing methodologies and experiments like MINOS, T2K, NOvA.

more infos...

Requirements for detectors and R&D

Mailing list: CENF-ND-Wg5 Microsoft Outlook e-mail file

GitLab: gitlab repository for CENF-ND-Wg5Toolbox

This working group will identify and support the R&D necessary to implement possible ND concepts.

more infos ...

Preparation to UESPP
Page dedicated to collect material to prepare a written document to sumbit for the preparation of the Update of the European Strategy for Particle Physics InputUESPP

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Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf CENF-NDintromeeting_minutes.pdf r1 manage 36.6 K 2017-07-27 - 09:50 StefaniaBordoni  
PDFpdf Guidelines-input-call-Feb2018.pdf r1 manage 292.4 K 2018-03-19 - 10:28 StefaniaBordoni Guidelines_InputCallUpdateEuropStrategyParticlePhysics
PDFpdf nd-science-strategy-cenf-nd.pdf r1 manage 3166.5 K 2018-04-19 - 16:14 MilindVamanDiwan Near measurements requirements and status for DUNE. Methods followed by MINOS/NOVA/T2K. Possible strategies for the future.
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Topic revision: r64 - 2019-01-25 - NectarB
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