Transcript Bank of Pure Isotopes - IDEA project

Bank of Pure Isotopes
Ezio Previtali
INFN Sez. Milano
Department of Physics
University of Milano Bicocca
Project activity in the first 18 months
milestones
6 months
12 months
18 months
- Formation of the isotope working
group
- Contacts with Russian labs
- Definition of a program for utilization
of available isotopes
- Selection of new interesting
isotopes and discussion of
enrichment and purification
techniques
- Negotiations for production
of the selected isotopes
- Contact with Russian and
US labs for purification
techniques
deliverables - Report on possibilities of Russian labs
- Report on a recommended program
- First conclusions on isotope selection and purification
- Report on new isotopes
possibly produced in Russia
-Report on purification issues
Milestones of the First six months
Formation of isotope working group
Ettore Fiorini
Pietro Benetti
Carlo Bucci
Monica Sisti
University of Milano Bicocca and INFN Sez. Milano
University of Pavia and INFN Sez. Pavia
Gran Sasso Laboratory of INFN
University of Milano Bicocca and INFN Sez. Milano
Contact with Russian labs:
Contact with Kurchatov Institute (Moscow)
Contact with some Research center in Russia
Evaluation of other labs:
Possible production in USA
Enrichment activities in Europe
Available data: production
Actually in Ge diode
HM and IGEX experiments
Isotopes production in Kurchatov Institute using centrifugue
Actually in TeO2 crystal form
MiDBD
CUORICINO
Available data: experiments
NEMO example
Isotope
Mass [kg]
100Mo
7.2
130Te
1.3
82Se
1.0
116Cd
.60
150Nd
.05
96Zr
.02
48Ca
.01
Isotopes come from different institution
It is difficult to define future use
It is important to reconstruct the history
It is crucial to define the level of purity
(this will come to NEMO results)
Xenon experiment of INFN Milan example
10 kg of Xe enriched in 136Xe and 10 kg depleted in 136Xe was made in USA
this materials was used for a multiwire proportional chamber experiment
today this is part of the DAMA experiment with scintillating Xe
Data base on available isotopes
We need to insert in the data base all the possible information:
mass of the isotopes
level of enrichments
production procedures and production laboratories
purification methods used
chemical and physical form
customers of the material
actual experiment that use such isotopes
possible future application
........
....
We would like to receive all the available information from experiments that
are now using isotope
Strategy:
Problems:
Availability for new experiments during next few years
Definition of a strategy for allocate Isotopes
Different experiments may need different chemical composition
Time schedule for distributing available isotopes
Selection of new and interesting Isotopes
Production resources:
Available techniques for producing Enriched Isotopes
Time needed for production of a definite quantity of material
Cost of the enrichment
Radioactive purity at the end of the enrichment (quality test)
Purification after the enrichment:
Analysis of purification techniques
Procedures for obtaining the final chemical compound
Physical and Chemical analysis on final production
ICR (Ion Cyclotron Resonance) enrichment
In Como there was a proposal to develop the ICR enrichment
During the last six month we have tried to evaluate the ICR approach.
We have asked to P. Louvet (a great expert in ICR) some information
He was in Milan for a seminar on ICR at the beginning of October
ICR general characteristics:
it is possible to enrich (in principle) all nucleus
it presents a very high throughput
it is not clear the level of purity of the final material
it presents, at the moment, a low production efficiency
it presents, probably, a lower level of enrichment respect to centrifuge
To realize a big machine:
basic technologies are available
industrial support is probably possible
there is a lot of interest in the plasma physics research
other scientific partners are possible (medicine, chemical analysis, ...)
but this is a very big job.........