# Presentation: 643492

## Physics impact of Applied

**Antineutrino Detector Development**

***Giorgio Gratta***
***Physics Department, Stanford***

## Bragging rights

**Synergy/collaboration**
**Compact detectors**
**No/light shielding is good**
**Very large detectors**
**Reliable/stable detectors**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Neutrinos have a rich history of synergies

**between pure science and technology**

**(bomb) technology**
**leads to scientific**
**discovery**

**science instrument**
**leads to (medical)**
**technology**

**Pure science**
**Leads to**
**(bomb) technology**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Bragging rights

** ****Quite unusual to have transition from pure science**
**   ****applications to applications this fast**
** ****Should used with the public, Congress and the funding**
**   ****agencies as an example of how fast this transition **
**   ****can occur**
** ****Should make the point of how even rather esoteric **
**   ****topics in science (i.e. neutrinos) can unexpectedly**
**   ****bring applications**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## The HEP/NP community

**The HEP/NP community**
**	****needs to learn that**
**	****applied physics**
**	****is good !**
**There is no shame **
**	****in finding that **
**	****our work can produce**
**	****tangible results,**
**	****...****sometimes **
**	****remarkably fast !**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Synergy/collaboration: Some future detectors for

**neutrino science and non-proliferation may share interests:**
**      ****here are some themes**

** ****θ****13**** and reactor monitoring share the interest for data that is**
**   ****not statistics dominated: need small systematics.   **
**    ****-Very high statistics reactor spectrum from reactor monitoring**
**        ****may be useful to get to the bottom of errors for ****θ****13****.   **
**    ****-Understanding in detail the effects of spent fuel maybe **
**        ****relevant for both.**
** ****Knowledge of the reactor spectrum: who wants to repeat **
**   ****Schreckenbach’s measurements and extend them to ****238****U **
**   ****with fast neutrons ?**** **
** ****Really large detectors (may be so large that the science **
**   ****community can’t build them alone)**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## When one needs the map below to site a detector

**(KamLAND), it is quite clear that there maybe**
**synergies with other field**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Synergy/collaboration: Some future detectors for

**neutrino science and non-proliferation may share interests:**
**      ****here are some themes**

**The really large detector would have applications in: **
**- Geophysics**
**- Supernova (astrophysics)**
** ****Nuclear non-proliferation**
** ****Neutrino physics**

***The exact size, timing, technology, location(s) ***
***maybe different for the different topics above***
***The technology may still require time to mature***
**But there is clearly a common interest here that**
**needs to be cultivated and encouraged !**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Synergy/collaboration: Some future detectors for

**neutrino science and non-proliferation may share interests:**
**      ****here are some themes**

** ****θ****13**** and reactor monitoring share the interest for data that is**
**   ****not statistics dominated: need small systematics.   **
**    ****-Very high statistics reactor spectrum from reactor monitoring**
**        ****may be useful to get to the bottom of errors for ****θ****13****.   **
**    ****-Understanding in detail the effects of spent fuel maybe **
**        ****relevant for both.**
** ****Knowledge of the reactor spectrum: who wants to repeat **
**   ****Schreckenbach’s measurements and extend them to ****238****U **
**   ****with fast neutrons ?**** **
** ****Really large detectors (may be so large that the science **
**   ****community can’t build them alone)**
** ****ULTNMME**

**(Ultra Large Tritium Neutrino Magnetic Moment Experiment)**

**What if we use “all of the tritium in the world” to build **
**a really large neutrino magnetic moment experiment**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## New technology: 1) compact detectors

**Coherent scattering**
**This is of primary interest for non-proliferation, as it**
**would allow detectors to be small.   Important when **
**the detector is an “accessory”.**
**But once the technology is developed, small detectors**
**may make science measurements easier or even possible. **
**Also the development of lower thresholds for coherent**
**scattering have direct impact on many science topics**
**(DM, ****ν**** magnetic moment,...)**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## New technology: 2) “unshielded” detectors

**Neutrino detectors traditionally require heavy shielding**
**For science this is, at first order, no problem: **
**  ****go underground, pile up lots of dirt, build heavy shields**
**Some non-proliferation technologies are simply impossible**
**  ****if heavy shielding is required (neutrino detector on a **
**  ****truck...) ******** do R&D on ultra-segmented detectors using**
**  ****very fast, modern electronics.   How far can this be **
**  ****pushed?****   **
**But if shield-less detectors become possible this would **
**  ****have lots of neutrino physics applications.   Think about**
**  ****a solar neutrino detector on a spacecraft flying towards**
**  ****the sun !**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## New technology: 3) reliable and stable detectors

**Scientific neutrino detectors are carefully tended by **
**  ****loving graduate students**
**For non proliferation is this clearly a problem, one wants**
**  ****an “industrial type” of unattended operation**
**Again, science may not have the patience to develop**
**  ****rugged neutrino detectors but certainly can use them.**
**  ****Just imagine if a *****unshielded, miniaturized, rugged ***
***     *****neutrino detector were to be available in the lab**
**     ****like a –say- neutron counter !**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006

## Conclusions

**This is a great opportunity for collaboration.**

- Giorgio Gratta

- AAP2006, Livermore Sept 26, 2006