smb cafe - 8 may 2014 - leiden cryogenics
DESCRIPTION
Presentation by Adalberto Costessi of Baseclear B.V. for the Science meets Business café of 8 May 2014. This event was held in the BioPartner 1 foyer in Leiden. For the report, see http://www.sciencemeetsbusiness.nl/8-may-2014/TRANSCRIPT
Leiden Cryogenics B.V.
The Dilution Refrigerators of
Leiden Cryogenics
SmB – 8 May 2014
Arlette de Waard
Leiden Cryogenics B.V.Founder - Giorgio Frossati
Plastic heat exchanger. T=5.5mK Grenoble, 1976
Silver heat exchanger.T=2mK Grenoble 1978-1982
CRYO1: WORLD RECORD for the lowest continuous temperature (T=1.85 mK). Leiden, 1982-1998
Silver Sinter
Heat Exchangers
Plastic dilution
refrigerators
All weldeddilution
refrigerators
Magnetic field independent
dielectric thermometers
PlasticPomeranchuk
Cells
Non-metal
pressure transduce
r
PhD Grenoble: Ultra Low Temperature ResearchWorld record lowest temperature for 25 years
Leiden Cryogenics B.V.MiniGRAIL (my PhD)
Gravitational Radiation Antenna In LeidenCuAl sphere – M=1400kg, Tmin=50mK
Leiden Cryogenics B.V.The Company
Founded in 1992 by Giorgio Frossati. Professor at the Kamerlingh Onnes Laboratory, Leiden University from 1980-2006.
Workshops:Kenauweg - Assembling
- Fabrication prototypes- Cryogenic tests
Ananasweg - Production hall
Number of employees 17
Physicist 4
Electronical engineer 1
Mechanical engineer 12
Most of the engineers were trained at the Leiden Instrument Making School, founded by Kamerlingh Onnes
Leiden Cryogenics B.V.The Company
Founded in 1992 by Giorgio Frossati. Professor at the Kamerlingh Onnes Laboratory, Leiden University from 1980-2006.
Workshops:Kenauweg - Assembling
- Fabrication prototypes- Cryogenic tests
Ananasweg - Production hall
Number of employees 17
Physicist 4
Electronical engineer 1
Mechanical engineer 12
Most of the engineers were trained at the Leiden Instrument Making School, founded by Kamerlingh Onnes
Leiden Cryogenics B.V.
DilutionRefrigerators
Room temperature pumping system
3K plate
JT HeatExchanger
Still
Heat Exchangers
Mixing Chamber
50K plate
Pulse tube
Leiden Cryogenics B.V.
Still
MixingChamber
DilutionRefrigerators
3K plate
HeatExchangers
JT HeatExchanger
Room temperature pumping system
3K plate
JT HeatExchanger
Still
Heat Exchangers
Mixing Chamber
50K plate
Pulse tube
Leiden Cryogenics B.V.
Still
MixingChamber
Dilution Refrigerators; Operation principle
3K plate
HeatExchangers
JT HeatExchanger
gas flow
Leiden Cryogenics B.V.Dilution Refrigerators
Still
MixingChamber
3K plate
HeatExchangers
JT HeatExchanger
gas flow
vapor
< 1% 3He
> 90% 3He
100% 3He
6% 3He
Leiden Cryogenics B.V.CF CS81 total system
Leiden Cryogenics B.V.New pumping system – Maglev & GX1000
Leiden Cryogenics B.V.New model (standard)
Leiden Cryogenics B.V.Fast cool down with the LC Probe
50K
3K
Still (900mK)
50mK
Mc (10mK)
Tmin≤15mK
Advantages: Possibility of many wires Easy access to center of magnet Fast cooling down to base temperature (<5 hours) High cooling power, up to 300W @ 120 mK
Leiden Cryogenics B.V.
Cryogen-Free DR – Specials: CUORE
1000 kgTeO2 crystals
Leadshielding
LC CF Dilution Refrigerator
CRYOGENIC UNDERGROUND OBSERVATORY FOR RARE EVENTS
Neutrinoless double-beta decay half-life of Majorana neutrinos
Cooling down 17 tons!!
Leiden Cryogenics B.V.
Cryogen-Free DR– Specials: CUORE
Tmin=4,5mK
Leiden Cryogenics B.V.Our customers (>150 systems)
MIT/HarvardStanford
5
2
2
5
82
Leiden/Delft
UCSB
Maryland
Detroit Waterloo
6Sydney
Melbourne
Leiden Cryogenics B.V.Our compatitors
Short delivery time, small models, expensive
Short delivery time, small models
UHV specialists Leiden Cryogenics B.V.Large models, low vibration levelsLarge cooling power, lowest temperature
Leiden Cryogenics B.V.Our Future