JRA2 - IDEA
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Transcript of JRA2 - IDEA
JRA2 - IDEAJRA2 - IDEA
Zaragoza, 7.11.2005
Andrea Giuliani
University of Insubria (Como) and INFN - Milano
IDEA: presentation of the tasks IDEA: presentation of the tasks
I1 - Isotope enrichment
P1 - 82Se project
P2 - 150Nd project
B1 - Cosmogenic induced activity
B2 - Underground crystal growth
B3 - Rejection of surface radioactivity
B4 - Ge diodes in liquid nitrogen
promising nuclides
backgroundcontrol
Milestones/deliverables to be achieved within 31/3/2006Milestones/deliverables to be achieved within 31/3/2006
Financial situationFinancial situation
requested prefinancing for second 18 months [Apr 2005 - Sept 2006]
and expenses in [Apr 2005 - Sept 2005]
2 3 4 6 8 9 11 15 16 20 21
CNRS INFN UNIZAR CTU JYU MPIK EKUT MiniGRAIL FMFI-UK UCL IRMM
requested- prefinancing 180000 204000 60000 6000 6000 115200 5900 27900 5900 0 4500
direct costs 300000 170000 50000 5000 5000 96000 4917 23250 4917 0 7500
personnel 25583.63 28000 12931.19 0 0 24568.92 0 0 0 0 1225.65
equipment 154.1 901.35 240.4 0 3000 0 0 0 0 0 0
consumable 0 18693.97 0 222.3 0 519.46 0 0 0 0 0
travel 1500.33 2770.55 0 0 0 0 1712 0 0 0 2438.22
total 27238.06 50365.87 13171.59 222.3 3000 25088.38 1712 0 0 0 3663.87
ratio (%) total/prefin (d.c.) 9.079353 29.62698 26.34318 4.446 60 26.13373 34.81798 0 0 48.8516
B2 – Underground crystal growthB2 – Underground crystal growth
New contractor: IRMM
B2 – Ge crystal growthB2 – Ge crystal growth
IRMM (Geel) New contractor
UMICORE (Olen) Largest producerof Ge in the world
CANBERRA (Olen) Companyspecialized in semiconductordetector development
HADES (Mol) uderground lab (230 mof rock)
steps for Ge detector realization:
1. reduction of GeO2 (10 ppb impurities)
2. poly- and mono-zone refinement (1 and 0.01 ppb)
3. pulling (0.001 ppb)
4. diode fabrication
crystal growth
in principle, all the steps can be made undergroundin practice, too expensivegood alternative: minimize CR exposure between steps
CANBERRA
UMICOR
IRMMHADES
~ 10 km
B2 – Ge crystal growthB2 – Ge crystal growth
B2 – TeOB2 – TeO22 crystal growth crystal growth
4 detectors from CTI with final CUORE size will be ready in Feb 2006They will be operated in a clean environment after surface treatment
Recent effort to study the possibility of replacing Bridgman method(SICCAS) with Czochralski method (CTI, IPI)
get rid of Pt impurities from the crucible (190Pt is radioactive)
A 3x3x3 cm crystal procured from CTI company
The crystal was operated as a detector for two runs in Gran Sasso(Hall C refrigerator - R&D for DBD bolometers)
The technical bolometric performance was excellent
High surface radioactivity not possible to set meaningful limits onthe bulk impurities (U, Th, Pt)
B2 - R&D Contract between LLNL and CTIB2 - R&D Contract between LLNL and CTI
Phase 1 : Redesign of CTI furnace to grow 75 mm diameter TeO2 crystals (completed)
Phase 2:Production of one TeO2 crystal large enough for 5x5x5 cm cube (target date: 30/9 – 31/12)
Phase 3:Delivery of 4 each 5x5x5 cm finished TeO2 crystals (target date: 31/12/05 – 31/3/06)
Phase 4 : Successful test of 5x5x5 cm TeO2 crystals as bolometers at LNGS (within 10 weeks of delivery)
Important stimulus from IDEA:
- visit to CTI company and preliminary agreement- discussion on crystallization procedure- purchase of a 3x3x3 cm3 crystal
Need to work with them to develop clean procedures for crystal production
clean materials strict procedures clean room operation
Visit planned for Nov. 14
prepared list of topics to be discussed tour new production facility
B2 - SICCAS (Shanghai) optionB2 - SICCAS (Shanghai) option
B2 - SICCAS (Shanghai) discussion planB2 - SICCAS (Shanghai) discussion plan
Web site in progressWeb site in progress