Download - Status on 82 Se enrichment IDEA meeting Heidelberg, October 21, 2004 S. Jullian, LAL-Orsay
Status on 82Se enrichment
IDEA meetingHeidelberg, October 21, 2004
S. Jullian, LAL-Orsay
PLAN
• 82Se programme: last meeting in COMO 8th April
• 82Se : status today
meetings in Moscow 4, 5 October
• Conclusion
CONCLUSION : COMO meeting 8th April
• Gas centrifuge OK but technical discussions are neededF6 X X
82Se is ``OK’’ 130Te ``OK’’• 150Nd no solution today
for a few Kg
cyclotron resonanceis the device for any
2 isotope• International level but Europe could be a motor CEA has the
know how
82Se program : COMO meeting 8th April
Aim : to produce 2 kg of 82Se very pure
• What is the radiopurety of F6 82Se ?• How to control the chemistry ?
F6 82Se 82SeIF NOT
then chemistry in INEEL (U.S)requirements
214Bi < 20 Bq/kg (1/10 NEMO3)200Tl < 2 Bq/kg (1/10 NEMO3)
schedule tentative≈ 1 year enrichment≈ 1 year chemistry
DataMonte-CarloRadonMonte-Carlo
82Se 932 g
216.4 days0.55 kg.y
NEMO3 June 2004 preliminary
Production of stable isotopes in RRC “Kurchatov Institute”
Fluorides, oxyfluorides,
Oxides,Carbonyls
Metal organics Rare gases
SiF4, SF6, GeF4, SeF6,
TeF6, MoF6, IrF6, WF6
CrO2F2, POF3,
Ni(PF3)4,
OsO4
Fe(CO3)5
CO2
Sn(CH3)4
Pb(CH3)4
Cd(CH3)2
Zn(CH3)2
Xe, Kr
Volatile compounds for centrifuge separationVolatile compounds for centrifuge separation
chlorideschlorides
TiClTiCl44
SiClSiCl33H, GeClH, GeCl44Ga(CHGa(CH33))33
Candidates to double beta decay
ECP, Zelenogorsk
SCP, Seversk
UCP, Novouralsk
EChPr, Lesnoi, EM
ECP, Nizhniy Novgorod
Sarov
Moscow, RRC “Kurchatov Institute”
ECP, St.Petersburg
ELP, Angarsk
Production of stable isotopes in RRC “Kurchatov Institute”
Location of main producers of stable isotopes in Russia
82Se status today
2 meetings in Moscow1) 4th October Anatoly Tchetsov, head of the lab.
Russian Research Center, Kurchatov InstituteLeonid Sosnine, KurchatovAlexander Barabash, ITEP (Moscow), member of
NEMOConclusions It is possible to produce 2kg of 82Se 1 year, cost 120 k Euros
82Se will be distilled at the end then the radiopurety could be better than before
The 82Se will be rent for a long period agreement is needed
2) Second meeting 5th OctoberA. Barabash, M. Danylov (director ITEP) agreement ITEP, IN2P3including 2kg 82Se for a long period will be signed
82Se radiopurety ?
• Next tracko-calo detector requirements NEMO3 x 10208Tl < 2 Bq/kg, 214Bi < 20 Bq/kg
• F6 82Se 82Se 82Se chemistry: distillation radiopurety ?
enough ? new way
• HPGe measurements6 kg of 82Se will be better than 2 kg to improve the sensitivity and the next 4kg will be less expensive
(~ 20 %)
CONCLUSION82Se programme possible
• 2kg - 1 year - 120 k Euros
• Radiopurety after distillation must be measured 6 kg ?
• Condition to get a reasonable cost and to avoid the customs problems (enriched materials are very expensive in the U.S): agreement for the use for a long period
• Future: a few100 kg seems to be possible
Thank you
S. Jullian, Heidelberg 21 October