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SPECTROMETER(S) Proposal for a New Neutrino CERN-PS Experiment: Neutrino Experiment with Spectrometer. S in SPECTROMETER(S) Proposal for a New Neutrino CERN-PS Experiment: Neutrino Experiment with Spectrometer. S in Europe on the quest for STERILE* neutrinos *Sterile neutrinos were proposed the first time by B. Pontecorvo, (JETP, 53, 1717, 1967) Luca Stanco on behalf of the Collaboration 1

The Proposed Lay-out at CERN-PS REVIVAL OF THE CERN PS NEUTRINO BEAM Rende Steerenberg, The Proposed Lay-out at CERN-PS REVIVAL OF THE CERN PS NEUTRINO BEAM Rende Steerenberg, CERN Switzerland Near detector Far detector Re-use the old TT 7 tunnel and cavern to house primary beam line and target station Proton beam to be provided by CERN PS 600 t LAr-TPC Far detector in building 191 150 t LAr-TPC Near detector “close to” 181, as much as possible similar to the T 600 ICARUS detector 13

A direct-new approach to Sterile Oscillations at CERN/PS The direct, unambiguous measurement of an A direct-new approach to Sterile Oscillations at CERN/PS The direct, unambiguous measurement of an oscillation pattern requires necessarily the (simultaneous) observation at several different distances. It is only in this way that the values of Dm 2 and of sin 2(2 q) can be separately identified. The CERN-PS experiment introduces important new features, which should allow a definitive clarification of all the present “anomalies”: ØL/E oscillation paths lengths to ensure appropriate matching to the Dm 2 window for the expected anomalies. Ø“Imaging” detector capable to identify unambiguously all reaction channels with a “Gargamelle class” LAr-TPC ØInterchangeable and anti- focussed beams Ø Very high rates due to large masses, in order to record relevant effects at the % level (>106 and ≈104 e) ØBoth initial e and components very cleanly identified in an extensive energy range. And Charge-Id measurement on event-by-event basis with magnetized Spectrometer ? 12

Mini. Boo. NE experiment at Fermi. Lab l Mini. Boo. NE looks for an Mini. Boo. NE experiment at Fermi. Lab l Mini. Boo. NE looks for an excess of electron neutrino events in a predominantly muon neutrino beam anti- 9

FACTS: and then ? - need a 5 secured measurement on the SBL related FACTS: and then ? - need a 5 secured measurement on the SBL related issues - LAr is the best technological option (bcks, energy range, full -interact. ) WHAT (we think) IS MISSING IN THE PREVIOUS PLAN ? - the / bar interplay is critical (beam contaminations, CPT ? ) - the / bar disappearance measurement is mandatory HOW ? Charge-Id measurement on event-by-event basis with magnetized Spectrometers, allowing to unambiguously identify and measure anti-n and n at the same time 5

SPECIFICALLY: - complement LAr with Charge Id (and partly momentum measure) at FAR and SPECIFICALLY: - complement LAr with Charge Id (and partly momentum measure) at FAR and NEAR sites PROPOSAL (being drafted): - Best reliable in term of physics performances, but also for cost&schedule - TWO Spectrometers - possibly with improved performances w. r. t. LAr (timing) 6

The Proposed Lay-out at CERN-PS Near detector Spectro -meter REVIVAL OF THE CERN PS The Proposed Lay-out at CERN-PS Near detector Spectro -meter REVIVAL OF THE CERN PS NEUTRINO BEAM Rende Steerenberg, CERN Switzerland Far detector Re-use the old TT 7 tunnel and cavern to house primary beam line and target station Proton beam to be provided by CERN PS 600 t LAr-TPC Far detector in building 191 150 t LAr-TPC Near detector “close to” 181, as much as possible similar to the T 600 TWO Spectrometers behind the TWO LAr-TPC’s T 600 ICARUS detector NESSi. E 7

 Aim: Investigating the existence of sterile neutrinos using a low energy νμ or Aim: Investigating the existence of sterile neutrinos using a low energy νμ or νμ beam in combination with a close and far liquid argon time projection chamber. What about νμ → νm oscillations ? ? Consider for example a 3+2 Sterile Neutrino model by Kopp et al. e APPEARANCE e DISAPPEARANCE DISAPPEAR. TO BE FOLDED with the , e , , e BEAM compositions/contaminations and with and cross-sections ! 8

CRITICAL to measure oscillated and non-oscillated neutrinos, either muon or electrons, e. g. LARGE CRITICAL to measure oscillated and non-oscillated neutrinos, either muon or electrons, e. g. LARGE contribution of νμ , BUT identifying Charge-ID allows ONE RUN of anti- and full measure for and anti- ! 2. 5*1020 p. o. t = 2 years of from previous model measure calibrate intensities 3! 3. 75*1020 p. o. t = 3 years of anti- 1 RUN = MANY DATA ! 9

Charge and momentum measurements in Neutrino Interactions for the Charge Current mode: important and Charge and momentum measurements in Neutrino Interactions for the Charge Current mode: important and challenging Important because: • increase the active target mass by measuring the muon momentum • increase the range of m 2 (at higher values, especially in the e. V 2 range) • calibration of the beam with a clean muon measurement at high p • normalization point for the NC/CC rates • clean separation of and bar interactions • disentangle the and bar reverse contaminations in the beams Challenging because: • find best compromise between passive and active materials 10

GOALS/CAVEATS Perform a DESIGN STUDY for a two-module Detector - cheap - almost no GOALS/CAVEATS Perform a DESIGN STUDY for a two-module Detector - cheap - almost no R&D - fast - fully compatible with the LAr proposal(s) - standalone - maximizing the physics output Spectrometer. S are essential to allow - full Charge ID - systematics control - clean separation n and anti-n 11

The detector layout at FAR/NEAR sites Liquid Argon is the best option for n The detector layout at FAR/NEAR sites Liquid Argon is the best option for n measurements in the PS beam energy range (electronic bubble chamber): o full measurement of n interactions o electron p 0 discrimination at 10 -3 level o NC rejection at 10 -3 with 90% ne identification efficiency Memorandum to SPSC, 09/03/2011 Spectrometer is essential to allow o full Charge ID o systematics control o clean separation nu and anti-nu Spe c -me tro ter NESSi. E proposal (t. b. s. ) Identical LAr-TPC + spectrometer combination at near site. Cryogenic plant to be moved aside 12

➱ TWO Spectrometers “à la OPERA”, optimized for acceptances (recovering of contingency parts: 300+300 ➱ TWO Spectrometers “à la OPERA”, optimized for acceptances (recovering of contingency parts: 300+300 RPC 3 m 2 detectors possible INFN recovering of iron/electronics) 500 cm 750 cm FAR NEAR 600 cm 900 cm m 00 c 5 1800 + 700 m 2 of RPC 20, 000+12, 000 digital channels Precision Trackers 13

Need to beat Multiple Scattering and Detector Resolution aver a large E range: ➯ Need to beat Multiple Scattering and Detector Resolution aver a large E range: ➯ d. E/dx measure ➯ long lever-arm (add iron slabs) Need to go to the lowest possible muon momentum (≈ 500 Me. V) with best sensitive charge Id at low energy ➯ add coils for B in air 14

LAr and Spectrometers complementarity NEAR site 11% not contained in LAr 21% partially in LAr and Spectrometers complementarity NEAR site 11% not contained in LAr 21% partially in LAr 34% Fully in LAr 34% measured by. Spectr. fully contained in LAr Collected by Spectrometer 15

Possible Physics output (e. g. according to model in slide 4) (full lines: NON Possible Physics output (e. g. according to model in slide 4) (full lines: NON oscillated, dots: oscillated) 3. 75 x 1020 pot of anti- -bar LAr+Spect (Q) FAR site LAr+Spect (Q) Reconstructed Neutrino Energy 16

Our Goal 1 day run enough to test the CDHS limit ! (full simulation Our Goal 1 day run enough to test the CDHS limit ! (full simulation AND reconstruction) 17

As a summary SPECTROMETERS complementing the LAr capabilities in measuring the muon momentum would As a summary SPECTROMETERS complementing the LAr capabilities in measuring the muon momentum would provide valuable information in: – measuring νμ disappearance in the full momentum range, which is a key ingredient for rejecting existing anomalies at exceeding ’s. or measuring the whole parameter space of sterile neutrino oscillations, i. e. prove sterile neutrino existence; – measuring the neutrino flux at the close detector in the full muon momentum range, relevant to keep the systematic errors at the lowest possible values. ALSO the measurement of the muon charge would provide valuable information in: – separating μ from anti- μ in the anti-neutrino beam (where the μ contamination is large). A critical issue is to fully exploit the experimental capability of observing any difference between νμ → νe and anti-νμ → anti-νe (CP violation signature). 18

Involvement: 35 (staff) people from INFN sites: Bari, Bologna, Frascati, Genova, Lecce, Padova, Roma Involvement: 35 (staff) people from INFN sites: Bari, Bologna, Frascati, Genova, Lecce, Padova, Roma 1, Salerno Interested: 2 more INFN groups Indian, Chinese, people (with RPC expertise) Excellent support by INFN management Approval and Financial requests submitted to INFN We are converging towards a Memorandum to be submitted to SPSC in October 2011 (more than 50 people will sign it) 19

IN E R G O R P S S 20 IN E R G O R P S S 20

Actions so far and in the near future MAY: presentations done to Neutrino Conferences Actions so far and in the near future MAY: presentations done to Neutrino Conferences ⇒ the physics case well accepted preliminary discussion with INFN mangement ⇒ INFN Giunta OK but no money for the beam discussions with CERN mangement ⇒ READY to pursue the beam project and to pay for the beam JUNE: preliminary discussions with CNII ⇒ go ahead with the study and the setting up of Collaboration SEPTEMBER: evaluation in CNII submission of a Memorandum to CERN-SPSC NEXT: optimize the magnets and the detectors wait for CERN decisions 21

CERN position A very exciting physics experiment is proposed for the more than 50 CERN position A very exciting physics experiment is proposed for the more than 50 years old CERN PS CERN Research Board meeting of 8 June: Team set up. TT 7 and n. TOF beam sharing makes efficient use of the CERN PS: The proposed experiment could be completed in 3 to 4 runs without forming any competition for protons with other experiments Shortening possible by dedicated running n. TOF would gain also on the number of integrated protons No direct competition for protons between PS and SPS neutrino facilities Large part of the required infrastructure is available, but needs to be consolidated Everything else needs to be designed and constructed The facility can also be (re-)used for other low energy neutrino physics, target R&D, Detector R&D, etc. . . CAVEAT: the neutrino-PS is presently not a Baseline CERN Project. 22

Tentative FINANCIAL plan* for 2013 -2017 2013 2014 2015 2016 2017 plus possible (minor) Tentative FINANCIAL plan* for 2013 -2017 2013 2014 2015 2016 2017 plus possible (minor) non-INFN contributions *under evaluation, wait for the SPSC submission 23

Tentative SCHEDULE - 2012: Design Optimization - 1 rst half 2013: Define tenders/contracts Setting Tentative SCHEDULE - 2012: Design Optimization - 1 rst half 2013: Define tenders/contracts Setting up Detectors Test-stands - 2 nd half 2013: Mechanical Structure construction Detector production Start Detector test Magnet (Air) preparation -1 rst half 2014: Start Magnet installation Start detectors installation -2 nd half 2014: End installation This schedule is based on the acquired experience with the OPERA Spectrometers, built up from 2005 to 2006, under critical conditions (LNGS restoration works by Italian Government). 24

Per il 2012 chiediamo: valutazione ed approvazione dell’R&D come dettagliato nelle richieste Preventivi per Per il 2012 chiediamo: valutazione ed approvazione dell’R&D come dettagliato nelle richieste Preventivi per un totale di 90 K€ 25

Collaboration Bari: 0. 4 FTE/2 Bologna: 1. 1/4 Frascati: 0. 2/2 Lecce: 0. 5/2 Collaboration Bari: 0. 4 FTE/2 Bologna: 1. 1/4 Frascati: 0. 2/2 Lecce: 0. 5/2 Padova: 1. 6/7 Roma 1: 0. 6/3 Salerno: 0. 3/2 TOTAL: 4. 7 FTE / 22 people In case the DESIGN STUDY will become an EXPERIMENT Be ready to multiple people for about 2 and FTE for about 4 In the near future: expression of interest from - 3 other Italian sites - French groups - Chinese group - Indian Groups to be evaluated. 26

Coinvolgimenti: BARI: Simulazione, Front-End BOLOGNA: Simulazione, Software, DAQ, Disegno, Meccanica FRASCATI: Simulazioni, Disegno, Rivelatori Coinvolgimenti: BARI: Simulazione, Front-End BOLOGNA: Simulazione, Software, DAQ, Disegno, Meccanica FRASCATI: Simulazioni, Disegno, Rivelatori LECCE: Rivelatori, Meccanica, Front-End, DAQ PADOVA: Simulazione, Disegno, DAQ, Meccanica ROMA-1: Simulazione e Software SALERNO: Software e Calcolo 27

Richieste Impegni di spesa per il 2012 Bari, coinvolgimento in: Simulazione, Front-End MI: Riunioni Richieste Impegni di spesa per il 2012 Bari, coinvolgimento in: Simulazione, Front-End MI: Riunioni di lavoro, 2 K MI: contatti per simulazione, 1 K ME: Riunioni al CERN, 2 K ME: Contatti per simulazione spettrometri/LAr, 1 K Consumo: Sviluppo schede di Front-END, 7 K TOTALE BA: 13 K Bologna, in Simulazione, Software, DAQ, Disegno, Meccanica MI: Riunioni di lavoro, 4 K MI: contatti per definizione struttura meccanica, 3 K ME: Riunioni al CERN, 4 K ME: Contatti per simulazione fascio/spettrometri, 2 K Consumo: Sviluppo scheda DAQ, 5 K Consumo: consumo per laboratorio meccanica, 2 K TOTALE BO: 20 K Frascati, coinvolgimento in Simulazioni, Disegno, Rivelatori MI: Riunioni di lavoro, 2 K MI: setting up test di rivelatori, 2 K ME: Riunioni al CERN, 2 K ME: Contatti per studio installazione struttura meccanica, 1 K Consumo: consumo per setting up test-stand, 2 K Consumo: Valutazione sicurezze, 2 K Consumo: Verifica Strutturale, 3 K TOTALE LNF: 14 K Padova, in Simulazione, Disegno, DAQ, Meccanica MI: Riunioni di lavoro, 4 K MI: Contatti per nuove collaborazioni, 2 K ME: Riunioni al CERN, 3 K ME: Contatti per compatibilita' politico-scientifica e nuove collaborazioni, 3 K Consumo: Studio controllo temperature, 2 K Lecce, coinvolgimento in Rivelatori, Meccanica, Front-End, DAQ Consumo: ripristino test di controllo rivelatori, 6 K Inventario: strumentazione per HV in test-stand, 3 K MI: Riunioni di lavoro, 2 K TOTALE PD: 23 K MI: setting up test di rivelatori, 2 K ME: Riunioni al CERN, 2 K Roma, coinvolgimento in Simulazione e Software ME: Contatti per studio installazione rivelatori, 1 K MI: Riunioni di lavoro, 2 K Consumo: consumo per setting up test-stand, 4 K Inventario: strumentazione per acquisizione in test-stand, 2 K ME: Riunioni al CERN, 2 K TOTALE RO: 4 K TOTALE LE: 13 K Salerno, coinvolgimento in Software e Calcolo MI: Riunioni di lavoro, 1 K ME: Riunioni al CERN, 1 K TOTALE SA: 2 K GRAN TOTALE: 89 K, di cui 27 (MI), 24 (ME), 33 (Consumo), 5 (Inventario) 28

A first estimate of the time schedule Spectrometer Detectors - 2012: Design Optimization - A first estimate of the time schedule Spectrometer Detectors - 2012: Design Optimization - 1 st half 2013: Define tenders/contracts Setting up Detectors Test-stands - 2 nd half 2013: Mechanical Structure construction Detector production Start Detector test Magnet (Air) preparation -1 rst half 2014: Start Magnet installation Start detectors installation -2 nd half 2014: End installation This schedule is based on the acquired experience of the OPERA Spectrometers, built up from 2005 to 2006, under critical conditions (LNGS renovation works by Italian Government). Cost: 4 - 8 M€ depending the restoration of available hardware* *under evaluation, wait for the SPSC submission 29

Stima costi (da OPERA, aggiornati) RPC: 1. 5 K€/camera -> 3000 mq => 1. Stima costi (da OPERA, aggiornati) RPC: 1. 5 K€/camera -> 3000 mq => 1. 5 M€ 0. 1 K€/mq copper strips -> 5000 mq => 0. 5 M€ 10 €/dig-channel -> 25, 000 digital channels => 0. 25 M€ Supplies about 0. 15 M€ DAQ about 0. 1 M€ cabling about 0. 1 M€ Gas system about 0. 2 M€ Test stand 0. 2 M€ TOTAL: 3. 0 M€ (available 1. 1. 2013: 1. 0 M€, new needs: 0. 5 -1. 5 M€ depending on the design) Magnet: Iron about 1. 0 M€ Supplies about 1. 0 M€ Structure about 2. 0 M€ TOTAL: 4. 0 M€ (available 1. 1. 2013: 1. 0 M€, new needs: 2. 0 -3. 0 M€ depending on the design) Installazione about 0. 5 M€ GRAND TOTAL: 7. 5 M€ (available 1. 1. 2013: 2. 0 M€, rest 5. 5 M€ of which new needs: 2. 5 -4. 5 M€) Running cost: gas, 0. 15 -0. 3 M€/year maintenance, 0. 15 M€/year shifts, 0. 30 M€/year IPOTESI RICHIESTE per 2013. FTE: *3. 5 = 4. 0*3. 5 = 14 MI: 14° 7 = 100 K ME: 14*5 = 40 K Consumo: 200 K Apparati: 2 M€ Trasporto: 30 K Inventario: 30 K TOTALE: 2. 4 M € 30

Timing and Spending profile (tentative) 2012 Design study, 0. 1 M€ 2013 Construction, 1. Timing and Spending profile (tentative) 2012 Design study, 0. 1 M€ 2013 Construction, 1. 5 -3. 5 M€ 2014 End Construction, Finalize Servicing, Installation, 0. 5 + 1. 0 + 0. 5 = 2. 0 M€ 2015 start Data Taking (March), 0. 7 M€ 2016 0. 7 M€ 2017 0. 7 M€ 2018 0. 7 M€ 2019 0. 7 M€ 31

BACKUP SLIDES 32 BACKUP SLIDES 32

Sterile neutrinos The possible existence of oscillations into sterile neutrinos was proposed the first Sterile neutrinos The possible existence of oscillations into sterile neutrinos was proposed the first time by B. Pontecorvo, (JETP, 53, 1717, 1967), but so far without conclusion. Two distinct classes of anomalies have been accumulated, namely Ø the apparent disappearance signal in the anti- e events detected from (1) near-by nuclear reactors and (2) from the from Mega-Curie k-capture calibration sources in the Gallium experiments to detect solar e Ø observation for excess signals of anti- e electrons from neutrinos from particle accelerators (LNSD/Mini. Boo. NE) These anomalies may could point out to the existence of at least one fourth non-standard neutrino state driving oscillations at a small distances, with typically m 2 new ≥ 1 e. V 2 and relatively large mixing angle with sin 2(2 new) ≈ 0. 1. The presence of additional neutrino states may be also hinted — or at least not excluded — by cosmological data 33

Can the anomalies indicate a more complicated picture? l Sterile neutrino models l 3+2 Can the anomalies indicate a more complicated picture? l Sterile neutrino models l 3+2 next minimal extension to 3+1 models l 2 independent m 2 l 4 mixing parameters l 1 Dirac CP phase allowing difference between neutrinos and antineutrinos ? From cosmology CMB + LSS + ΛCDM Ns= 1. 6 ± 0. 9 Hamann, Hannestad, Raffelt, Tamborra, Wong, PRL 105 (2010) 181301 BBN: Ns= 0. 64 ± 0. 4 Izotov, Thuan, Ap. JL 710 (2010) L 67 Number of sterile neutrinos 34

The Gallium anomaly l SAGE and GALLEX experiments recorded the calibration signal produced by The Gallium anomaly l SAGE and GALLEX experiments recorded the calibration signal produced by intense artificial kcapture sources of 51 Cr and 37 Ar. l The averaged result of the ratio R between the source detected and predicted neutrino rates are consistent with each other, giving R = (0. 86 ± 0. 05), about 2. 7 from R=1 l These best fitted values may favour the existence of an undetected sterile neutrino with an evidence of 2. 3 and a broad range of values centred around m 2 new ≈ 2 e. V 2 and sin 2(2 new) ≈ 0. 3. 35

The reactor (anti)-neutrino disappearance anomaly l Recently a re-evaluation of all the reactor antineutrino The reactor (anti)-neutrino disappearance anomaly l Recently a re-evaluation of all the reactor antineutrino spectra has increased the flux by about 3%. With such a new flux evaluation, the ratio R between the observed and predicted rates is decreased to R = 0. 937 ± 0. 027 , leading to a deviation of 2. 3 from unity (98. 4 % confidence level). l Reactor experiments all explore distances which are far away from the perspective oscillatory region with m 2 new ≈ 2 e. V 2, with perhaps the exception of the ILL experiment (at 9 m) which had unfortunately a very modest statistical impact (68% confidence level). The disappearance rate is given by the well known formula At m 2 new = 2 e. V 2 and E = 2 Me. V the first predicted minimum of R occurs at 1. 23 m 36

Short baseline reactor antineutrino anomaly 3 active + sterile Observed/predicte d = 0. 937 Short baseline reactor antineutrino anomaly 3 active + sterile Observed/predicte d = 0. 937 ± 0. 027 m 2 new≫ 1 e. V 2 sin 2(2 new) = 0. 06 From G. Mention et al. ar. Xiv: 1101. 2755 v 1 [hep-ex] 37

The LNSD like anomalies ( ) e l As well known, the LNSD signal The LNSD like anomalies ( ) e l As well known, the LNSD signal with anti-neutrino oscillations from an accelerator would imply an additional mass-squared difference largely in excess of the Standard Model’s values. l The LSND signal (87. 9 ± 22. 4 ± 6. 0) represented a 3. 8 effect at L/E distances of about 0. 5 – 1. 0 m/Me. V. l The Mini. Boo. NE experiment has used a horn focused neutrino beam from 8 Ge. V protons of the FNAL Booster, to verify the observation of an anti- e anomaly of the LSND experiment l While the LSND like anomaly seems to be absent in the neutrino data, a new ”anomaly” appears at much smaller values of the neutrino energy. 38

LSND: Evidence for ( ) e Excess of events: 87. 9 22. 4 6. LSND: Evidence for ( ) e Excess of events: 87. 9 22. 4 6. 0 Expectation for oscillations Beam related backgrounds Data points after background subtraction l. The experimental evidence is very strong, namely 3. 8 s. d. l. The experimental result so far has not been challenged experimentally 39

The Mini. Boo. NE anti-neutrino run TO EU B F. Mills, ICHEP, July 2010 The Mini. Boo. NE anti-neutrino run TO EU B F. Mills, ICHEP, July 2010 ED AT PD l The more recent Mini. Boo. NE antineutrino run has shown the direct presence of a LSND like anomaly for neutrino energies > 430 Me. V. The result is compelling with respect to the ordinary two-neutrino fit, indicating a 99. 4% probability for an anomalous excess in e production. l The reported effect is broadly compatible with the expectation of LNSD experiment, which, as well known, was originally dominant in the antineutrino channel. 10

Unique features of the CERN PS beam l The present proposal is a search Unique features of the CERN PS beam l The present proposal is a search for spectral differences of electron like specific signatures in two identical detectors but at two different neutrino decay distances. l In absence of oscillations, apart some beam related small spatial corrections, the two spectra are a precise copy of each other, independently of the specific experimental event signatures and without any Monte Carlo comparisons. Precise identity of -e events in the near and far positions l Therefore an exact, observed proportionality between the two e spectra implies directly the absence of neutrino oscillations over the measured interval of L/E. 14

Anomalies: an unified approach ? Allowed regions in the plane for combined results: the Anomalies: an unified approach ? Allowed regions in the plane for combined results: the e disappearance rate (right) (reactors and Gallium sources) the LSND /Mini. Boo. NE anti- e accelerator driven anomaly (left). While the values of m 2 new may indeed have a common origin, the different values of sin 2(2 new) may reflect within the four neutrino hypothesis the structure of U(4, k) mass matrix, with k = µ and e. C. Rubbia copyright 11

Sensitivity to disappearance anomalies l Sensitivities (90% CL) in the sin 2(2 new) vs. Sensitivity to disappearance anomalies l Sensitivities (90% CL) in the sin 2(2 new) vs. m 2 new for an integrated intensity of (a) at the 30 k. Watt beam intensity of the previous CERN/PS experiments, (b) the newly planned 90 k. Watt neutrino beam and (c) a 270 k. Watt curve. They are compared (in red) with the “anomalies” of the reactor + Gallex and Sage experiments. A 1% overall and 3% bin-to-bin systematic uncertainty are included (for each 100 Me. V bins). 15

Comparing LNSD like sensitivities (ar. Xiv: 0909. 0355) Expected sensitivity for the proposed experiment Comparing LNSD like sensitivities (ar. Xiv: 0909. 0355) Expected sensitivity for the proposed experiment exposed at the CERN-PS neutrino beam (left) for 2. 5 1020 pot and twice as much for anti-neutrino (right). The LSND allowed region is fully explored both for neutrinos and antineutrino. The expectations from one year of at CNGS 2 are also shown.

Aims Put a 5 contour on these plots: 1 day run enough to check Aims Put a 5 contour on these plots: 1 day run enough to check the CDHS limit ! 45

WORK IN PROGRESS 3+2 model (see slide 4) best fit prediction in m 2, WORK IN PROGRESS 3+2 model (see slide 4) best fit prediction in m 2, sin 22 Exclusion limit, compared to previous one 46