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Current status of AMoRE-10 cryostat
Cryostat for AMoRE-10 (Contracted & manufac-turing)
Cryogen-free Dilution Refrigerator for AMoRE 10
-Pulse Tube based CFDR
Leiden Cryogenics
-Model : CF-1200-Maglev
-Minimum Temperature : <10 mK
-Cooling-power : 1.4 mW at 120 mK
-Cool-down time : ~ 20 hours with LN2 precool-ing 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%
Experimental space of AMoRE 10 cryostat
5 layers, 7 columns
Single LTD cell
35 CMO crystal (10 kg)
AMoRE 10
70 mm
60 mm
Outer-most dimensionIncluding Cu holder
550 mmM. C. bottom to 50 mKshield top
408 mm
- Cu shield, lead blocks, and S/C
shield inside the M. C.Installation : possible, but tight
CMO crystal, 2 MMC, 2 SQUID, and copper holder.
Arrangement of cells
35 single cells are installed on the mounting unit
Arrangement of single cells
Mounting unit is surrounded with the superconducting shield
Under developing of proto-type
string
-Shape of single cell
present will be tested
SCshiel
d
Superconducting shield including mounting unit will be supported by stringString type loading : vibration and thermal connection of M.C. plateMount-
ing unit
Lead shield in the MXC
-700 Kg Lead shield in M. C.
Cool-down time to base temper-atureExpectation : 1 week with LN2 pre-
cooling
Customization
100 kg lead shield in M. C.
Lead bricks will be installed at the bottom of the M.C. plate
-Materials (IVC can, OVC can, thermal shield, etc)IVC can & thermal shields : high purity copper internal radiation IVC can : fabricating (welding) so diffi-cult Dr. Li-Jin is searching proper com-pany
Leadbricks
Additional Lead bricks for sur-roundingdetectors : under discussion
Each temperature plate : OFE grade copper under discus-sion
Lead shield inside the refriger-ator
Activation by the air transport (for reducing de-livery time)
Activation during the air transport
Copper of Aurubis com-pany 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 tomor-row
- 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 re-frigerator will be decided.
test block 2 : shipped (03/ 03/ 2014)
(10 × 10 × 3 cm, 2.44 kg) coming soon
Loading a cryostat
Base frame for CFDR loading
Lead shield
CFDR
Solid enough to load our system safety evaluation
Thickness of lead shield100 mm 150 mm
Loading a cryostat
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 possi-ble
move
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
Additional refrigerator : under contacting will be ordered early or middle June
Arrangement in A5 Lab
office
LTD
AMoRE-10Fridge
Addi-tionalFridge
AMoRE-10 refrigerator : will arrive at middle or late October 2014
193 mm
65 mm
193 mm
90 mm
E-rackPump
station
Refrigera-tor
Detec-tor
Refrigerator, E-rack, pumping station, and compressor : 2 set
Electrical power, coolant flux : deter-mined
Exhaust, air conditioning, and arrangement : more discussion
All of construction : depends on “”””“ Dr. K. S. Park ”””””
Arrangement in A5 Lab