1. Current status of AMoRE-10 cryostat

2. Cryostat for AMoRE-10 (Contracted & manufacturing)
Cryogen-free Dilution Refrigerator for AMoRE 10
Leiden Cryogenics
Pulse Tube based CFDR
Model : CF-1200-Maglev
Minimum Temperature : <10 mK
Cooling-power : 1.4 mW at 120 mK
Cool-down time : ~ 20 hours with LN2 precooling
without any extra load
Contract informations
December, 23, 2013
Price : 420,000 euro
Delivery : shipped within September, 26, 2014
Delay penalty : 630 euro/day, Max. 10%

3. Experimental space of AMoRE 10 cryostat
Single LTD cell
35 CMO crystal (10 kg)
5 layers, 7 columns
CMO crystal, 2 MMC, 2 SQUID,
and copper holder.
408 mm
550 mm
M. C. bottom to 50 mK
shield top
60 mm
70 mm
Cu shield, lead blocks, and S/C
shield inside the M. C.
Outer-most dimension
Including Cu holder
Installation : possible, but tight

4. Arrangement of single cells
Shape of single cell
present
will be tested
Arrangement of cells
35 single cells are installed on the
mounting unit
Mounting unit is surrounded with the
superconducting shield
Superconducting shield including mounting
unit will be supported by string
string SC
shield
String type loading : vibration and thermal
connection of M.C. plate
Mounting unit
Under developing of prototype

5. Lead shield in the MXC Lead shield inside the refrigerator
700 Kg Lead shield in M. C.
100 kg lead shield in M. C.
Cool-down time to base temperature
Expectation : 1 week with LN2 pre-cooling
Lead bricks will be installed at the bottom
of the M.C. plate
Additional Lead bricks for surrounding
detectors : under discussion
Customization
Materials (IVC can, OVC can, thermal shield, etc)
IVC can & thermal shields : high purity copper
internal radiation
Lead
bricks
IVC can : fabricating (welding) so difficult
Dr. Li-Jin is searching proper company
Each temperature plate : OFE grade copper
under discussion

6. Activation by the air transport (for reducing delivery time)
Activation during the air transport
 Copper of Aurubis company
 The copper components in the AMoRe10
refrigerator are made with this
test block 1 : delivered by airplane
(10 × 10 × 3 cm, 2.44 kg)
will arrive Y2L by tomorrow
test block 2 : shipped (03/ 03/ 2014)
(10 × 10 × 3 cm, 2.44 kg)
coming soon
- Using a Ge detector of Y2L, Dr. J. H. So will measure and compare the
activation degree of two test blocks delivered by airplane and ship
- Based on the result, the transportation way of AMoRE 10 refrigerator
will be decided.

7. Loading a cryostat Base frame for CFDR loading
Lead shield
CFDR
Base frame for CFDR loading
Solid enough to load our system
 safety evaluation
Thickness of lead shield
100 mm  150 mm

8. Loading a cryostat move All lead shields are designed that it can be
move for the experimental space
 1.5 m experimental space
Person have to do a work on the base-frame : two persons possible

9. A5 Lab in the Y2L The maximum height of LTD Lab : 3.7 m
270 mm space between ceiling and the top of the lead shield
Muon veto or other stuffs have to be set between
the 270 mm space. Very tight

10. Arrangement in A5 Lab Pump E-rack station Refrigerator Detector 193 mm
AMoRE-10
Fridge
LTD
office
Additional
Fridge
AMoRE-10 refrigerator : will arrive at middle or late October 2014
Additional refrigerator : under contacting
will be ordered early or middle June

11. Arrangement in A5 Lab
Refrigerator, E-rack, pumping station, and compressor : 2 set
Exhaust, air conditioning, and arrangement : more discussion
Electrical power, coolant flux : determined
All of construction : depends on “”””“ Dr. K. S. Park ”””””