cuore clean room robin lafever lbnl lngs 9/18/2015robin lafever lbnl, lngs1
TRANSCRIPT
CUORE Clean Room
Robin LafeverLBNLLNGS
04/19/23 Robin Lafever LBNL, LNGS 1
Overview
Overview
Timing
Radon-free strategiesRadon-Box Concept
All N2 assemblyLocal Radon Abatement
Clean Room LayoutsPSA studies
Extended Clean Rooms
Specifications
Soft EnclosuresHard enclosures
TestingFull scale mockups
Proof-of-concept ModelsMaterial screening
04/19/23 Robin Lafever LBNL, LNGS 2
Overview
04/19/23 Robin Lafever LBNL, LNGS 3
In April 2008, studies were started to define the Clean Room requirements and develop Radon abatement strategies.
In addition to reviewing requirements imposed by assembly and operation scenarios, PSA storage in the Clean Room area was also studied.
Clean Room design and Radon abatement were eventually approached as separate problems each with unique requirements.
A general Clean Room specification was developed, and Radon abatement was expanded into three competing strategies
Crystal Assembly Layout
04/19/23 Robin Lafever LBNL, LNGS 4
Starting point is the layout from Silvio Morganti’s assembly scenario shown in the ‘zeropuntquindici’ document.
Crystal and Tower assembly is done under N2 glove boxes.
During this time, the Cryostat is being assembled and tested, and the Cryostat room is open to outside air at several times for loading assemblies and major components
Tower Integration Layout
04/19/23 Robin Lafever LBNL, LNGS 5
Detector assembly is also done under N2 glove box, then moved into the Cryostat room for mounting to the Cryostat.
Early plans were to do this in open air with exposure limited by time.
PSA Layout studies-3
04/19/23 Robin Lafever LBNL 6
In mid April 2008, a series of studies was conducted to attempt to accommodate the desire to place the place the Permanent Storage Area (PSA) in or near the CUORE clean room assembly area. The intent was to evaluate the feasibility of placing the PSA in a clean room/Radon-free environment, if possible. With discussion, an additional requirement evolved to keep the PSA and assembly areas separate to avoid traffic and possible interference between Storage and Assembly operations.
,
Typical PSA cabinet used in these layouts is based on a Type A, Series 400 Stainless Steel unit from Terra Universal.
04/19/23 Robin Lafever LBNL 7
Default Clean Room layout.This configuration conforms closely to that shown in the Morganti document zeropuntoquindici
04/19/23 Robin Lafever LBNL 8
Default Clean Room layout Iso view shows placement of the doors and placement of some of the assembly hardware
04/19/23 Robin Lafever LBNL 9
Default Clean Room layout drawing with basic room dimension and floor area
04/19/23 Robin Lafever LBNL 10
Units are in Meters
Extended Clean Room layout with PSA cabinets .The cabinet arrangement is arbitrary and is only one of many studied. This layout includes a separate Gowning chamber and is consistent with the desire to keep PSA storage out of traffic areas during assembly operations.
04/19/23 Robin Lafever LBNL 11
Extended Clean Room layout Iso view showing the doors and another PSA cabinet arrangement.Note the repositioning of the large equipment access door directly into the Cryostat area.
04/19/23 Robin Lafever LBNL 12
Extended Clean Room layout drawing with basic room dimension and floor area
04/19/23 Robin Lafever LBNL 13
Units are in Meters
Cat walk study and extended Clean Rooms
Alternative PSA storage was considered in the Cuoricino clean room level and included the desire to transport crystals and sub assemblies safely from the Cuoricino deck to the Cuore deck with out the risk of using several stairs and level changes
Early June, requirements for PSA storage in the Clean Room were ruled out, however an expanded Clean Room was approved as additional assembly space.
04/19/23 Robin Lafever LBNL, LNGS 14
Catwalk
04/19/23 15Robin Lafever
Catwalk
04/19/23 16Robin Lafever
Catwalk
04/19/23 17Robin Lafever
Clean Room Layouts
04/19/23 Robin Lafever LBNL, LNGS 18
Cuore Hut with stair access
04/19/23 Robin Lafever LBNL, LNGS 19
Default Clean Room layout showing Cryostat utility conduit
04/19/23 Robin Lafever LBNL, LNGS 20
Default Clean Room layout showing Cryostat utility conduit
04/19/23 Robin Lafever LBNL, LNGS 21
Extended Clean Room version A
04/19/23 Robin Lafever LBNL, LNGS 22
Extended Clean Room version A
04/19/23 Robin Lafever LBNL, LNGS 23
Extended Clean Room version B
04/19/23 Robin Lafever LBNL, LNGS 24
Extended Clean Room version B
04/19/23 Robin Lafever LBNL, LNGS 25
Extended Clean Room version C
04/19/23 Robin Lafever LBNL, LNGS 26
Extended Clean Room version C
04/19/23 Robin Lafever LBNL, LNGS 27
Timing
04/19/23 Robin Lafever LBNL, LNGS 28
As-built 09 April 2008
Cuore concrete support structure with jack screws in place
Cuore site with elevator deck ready for installation
29Robin Lafever CUORE Structure assembly sequence
RIGHT NOW, the Cuore experimental area is under construction. Many construction details are still being designed, Including clean room and Radon mitigation strategies.Timing may well limit the options being considered for the installation of a Radon barrier and clean room modificatios.
Superimposing the CAD model illustrates how the build-up sequence has influenced the choices for an appropriate Radon barrier because of access and installation constraints
Timing Build-up sequence
Support structure with major structural elements in place, including the elevator deck
30Robin Lafever CUORE Structure assembly sequence
At this point, the only options for installing a Radon barrier will be limited to the INSIDE surfaces of the clean room.
31Robin Lafever CUORE Structure assembly sequence
Robin Lafever CUORE Structure assembly sequence 32
Hut carpentry will probably precede clean room installation,But access to the clean room exterior is clearly restricted
Timing Clean Room idealized
The electronics bay currently has no requirement for either particle count or Radon exclusion, but, further restrict access to the clean room roof.
33Robin Lafever CUORE Structure assembly sequence
Timing Clean Room idealizedThe current clean room geometry is shown here as an ‘ideal’ layout with no interfering structure around it.Assuming a Radon barrier is applied to the outer surfaces of the clean room, this is the time to do it.However, this is not a real possibility. Therefore, we must consider methods for installing a barrier before the clean room construction.Or, modifying the clean room panels such that they ARE the Radon barrier.
34Robin Lafever CUORE Structure assembly sequence
Radon-free strategies
04/19/23 Robin Lafever LBNL, LNGS 35
Radon BoxThe ‘Radon Box’ is a welded membrane which includes all air-handling and ductwork. The concept is to conserve and reuse Radon-free air and is sensitive to permeability and leaks.In conflict with minimum room air changes (5/hr) required for Clean Room operation. To realize this concept in our application requires reducing the Radon-free volumes into small zones andMay require negotiated safety equipment and waivers. It will be expensive.
All N2Assumes all work is done under N2 with NO radon-free air supply.Preferred scenarios use soft enclosures and glove enclosures.Extreme scenarios involve working in N2 atmosphere with Oxygen masks
Local Radon-free zonesUses temporary enclosures around work area supplied with Radon-free air.Depends on high flush rate in small volumes. Less sensitive to leaks and permeation. More sensitive to air exchange rates
Radon Box concept
04/19/23 Robin Lafever 36
Radon Box concept
04/19/23 Robin Lafever 37
Radon Barrier Zones
04/19/23 Robin Lafever 38
Radon Box Zones
04/19/23 Robin Lafever 39
Radon Box Zones
04/19/23 Robin Lafever 40
Radon Box Zones
04/19/23 Robin Lafever 41
Radon Box Zones
04/19/23 Robin Lafever 42
Doors
04/19/23 Robin Lafever 43
Doors
04/19/23 Robin Lafever 44
300 K Flange modifications
04/19/23 Robin Lafever 45
04/19/23 46Robin Lafever
300 K Flange, MODIFIED
In addition, feed-through assemblies are required for the Lifting assembly.
The radial position and feed-through details are not known at the moment, but this treatment shows RadonSeals and cables inside the adapter flange.
04/19/23 47Robin Lafever
300 K Flange, MODIFIED
Bottom view
Note that the Suspension assembliesAre potential Radon leaks and need seals.
The details are not known to me, however, IShow an assembly that could incorporate O-ring packing glands.
04/19/23 48Robin Lafever
Top section view showing Suspension hardware,Cable feed-throughs, and the adapter Flange with Radon Barrier/vibration isolator
Note that the feed-through will need some radial space,TBD.
04/19/23 49Robin Lafever
Bottom section
Again, note that the suspensionHardware needs a Radon seal
Again, this is a potential Radon leakAnd will need some kind of seal.I do not know what the actual details are.
Soft Enclosures
04/19/23 Robin Lafever LBNL, LNGS 50
Soft enclosure Cryostat assembly scenario
04/19/23 Robin Lafever LBNL, LNGS 51
Typical setup for both hard and soft enclosures.
Stand alone Air handling unit.
Supplies closed-circuit filtered air at high rate of exchange as well as air conditioning and humidity control.Several capacities available.
Stand alone Air shower/vestibule unit.Squeeze shown here. Full-scale test planned
Soft enclosure during Detector assembly in the assembly room
Soft enclosure during Detector assembly in the Cryostat room
2 meter diameter Soft enclosure mockup
04/19/23 Robin Lafever LBNL, LNGS 54
A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure
2 meter diameter Soft enclosure mockup
04/19/23 Robin Lafever LBNL, LNGS 55
A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure
2 meter diameter Soft enclosure mockup
04/19/23 Robin Lafever LBNL, LNGS 56
A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure
2 meter diameter Soft enclosure mockup
04/19/23 Robin Lafever LBNL, LNGS 57
A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure
2 meter diameter Soft enclosure mockup
04/19/23 Robin Lafever LBNL, LNGS 58
A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure
04/19/23 Robin Lafever LBNL, LNGS 59
Squeeze Box full-scale mockup
04/19/23 Robin Lafever LBNL, LNGS 60
Squeeze Box full-scale mockup
04/19/23 Robin Lafever LBNL, LNGS 61
Squeeze Box full-scale mockup
04/19/23 Robin Lafever LBNL, LNGS 62
Squeeze Box full-scale mockup
04/19/23 Robin Lafever LBNL, LNGS 63
Soft enclosure during Shield installation
Soft enclosure Shield installation scenario
04/19/23 Robin Lafever LBNL, LNGS 65
Shield installation
Detector has been installed
Shield installation
Floor Seal in place
Shield installation
Flexible Shield seal in place
Shield installation
Floor plate and seal removed
Shield installation
Shield installation
Shield installation
Soft enclosure Cryostat assembly scenario Scale Mockup
04/19/23 Robin Lafever LBNL, LNGS 73
Hard Enclosures
04/19/23 Robin Lafever LBNL, LNGS 74
2.5 Meter Hard Enclosure full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 81
2.5 Meter Hard Enclosure full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 82
Assembly under N2 default scenario
04/19/23 Robin Lafever LBNL, LNGS 83
Assembly under N2 Soft Glove box scenario
04/19/23 Robin Lafever LBNL, LNGS 84
Assembly under N2 with O2 mask scenario
04/19/23 Robin Lafever LBNL, LNGS 85
Soft glove box detail
04/19/23 Robin Lafever LBNL, LNGS 86
Soft glove box detail Top view
04/19/23 Robin Lafever LBNL, LNGS 87
Soft glove box detail
04/19/23 Robin Lafever LBNL, LNGS 88
Soft glove box detail
04/19/23 Robin Lafever LBNL, LNGS 89
Soft Glove box Full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 90
Soft Glove box Full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 91
Soft Glove box Full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 92
Soft Glove box Full scale mockup
04/19/23 Robin Lafever LBNL, LNGS 93
Specifications
04/19/23 Robin Lafever LBNL, LNGS 94
Clean Room Specs WIP
Standard Features Overall CLASS 1000 with 5 people working
Air change rate consistent with use of N2 glove boxes (minimum 5/hour, CLASS 1000 spec has higher rate requirement)
Isolation required between zones: Assembly zones, TBD, and Cryostat assembly zone. Separate air handling equipment is assumed.
Panels Vendor specified, Metal walls: Al or Stainless honeycomb, Painted steel preferredFloor Vendor specified Metal floors: Al or Stainless honeycomb, or solid metalLights Vendor specified, preferably included in filter modules (see below)Doors Vendor specified, number and placement TBD Air Handling/Filters Preferred: Modular ceiling mounted (may conflict with head
roorequirements/available space within steel structure)Backup: Roof mounted with exterior ductwork (may conflict with utilities and
hardware in adjacent structures) Pass-throughs 1 pass through from the gowning room to the tower Assembly area and
1 pass though from the tower assembly area to the cryostat area.
Vestibules Stand-alone unit preferred: Air shower probably NOT preferred How many?
04/19/23 Robin Lafever LBNL, LNGS 95
Clean Room Specs WIP
Standard Features Continued
Utilities Power distribution in each room: 1 Quad outlet every 1.5 meters ( 4x 220V) 1 High power outlet every 6 meters ( equiv to US 220V outlet) 1 ~ 480V outlet per room (“ enough for a welder”) Hard-wired power may be required for assembly stations:
Tower assembly unitAutomated wire-bond unitAutomated gluing stationFume Hood
UPS power supply for critical systemsBreaker panels in each roomN2 distribution in each room (How many ports)Shop AirWater ,deionized ,we need a stand-alone system?)Vacuum
Furniture Tables, chairs, storage cabinets, TBD (A subset of the PSA cabinets may
be required)
04/19/23 Robin Lafever LBNL, LNGS 96
Clean Room Specs WIP
Special features and additional equipment Utility interface Vendor supplies interface frame, LNGS
supplies utility interface panels, min. 1 for each room. Will include utilities
listed above Fume Hood Requires filtration on the output
for dangerous chemicals, TBD O2 monitors Requires interlock with Visual and
Audio alarm systemRequires O2 monitor Failure
alarmRequires interlock with N2 supply
Fire sensors/Alarm ( Stand-alone, ie. independent of
power supply?) Extinguishers Hand held units, consistent with Clean Room
use Access finger print type biometric
monitor for access to clean room Emergency lighting Stand-alone, isolated from power
supply Large access doors May be removable panels.
Required for installation of large equipment and Cryostat assemblies. Location, size,
number TBD Portable filter unit Required for Radon-free
enclosures, capacity TBD
04/19/23 Robin Lafever LBNL, LNGS 97
Clean Room Specs WIP
Special features and additional equipment Cont’d Portable lighting May be desirable for Radon-free work areas/enclosures Tower assembly station Requires Hole in the Clean Room floor and access from the room below.
Unit supplied by LNGS N2 Glove boxes Includes hand-assembly areas, Tower assembly station, Wire-bonding station,
Gluing station Vibration Isolation Cryostat seal: Flexible membrane between Clean Room ceiling and 300K flange
Cryostat Support Structure Seals: Flexible membranes between Clean Room floor and 4 support columns, or, enclosed columns.
Removable floor panel Removable floor structure below Cryostat. Removed/replaced several times
during assembly, testing, and operation phases Removable floor Seal Removable seal (Membrane or hard panel). Removed/replaced several times during
assembly, testing, and operation phases.
Radon-free enclosures Detailed in separate document/page Radon-free air supply Detailed elsewhere
04/19/23 Robin Lafever LBNL, LNGS 98
Clean Room Specs WIP
Radon-free Enclosures Detector assembly enclosure Located in the assembly area. * This is an option.
Temporary enclosure. Will be erected and removed at appropriate phases of the assembly process.Air supplied by Radon-free air supply. Positive pressure relative to Clean Room ambient pressure. Exhausts into the Clean Room.Requires stand-alone filtration unit installed INSIDE the radon barrier. Capacity
TBD. (<300m3/hr.) Air flow in the enclosure is assumed to be NON LAMINAR.Assumed Radon-free air supply rate (300 cubic meters/hour) (Requires utility feed-through interface. Utilities TBD.
Option 1: Hard sided prefabricated enclosure with vestibule or Squeeze- box access and pass-through ports.
Option 2: Soft inflatable prefabricated structure, also with vestibule or Squeeze-box access and pass-through ports. May be single use, disposable.
Detector assembly enclosure Located in the Cryostat assembly area. **This is the OTHER option.
Same as above with the following additional feature: Flexible seal between the walls and the 4K Flange.
04/19/23 Robin Lafever LBNL, LNGS 99
Clean Room Specs WIPRadon-free Enclosures Cont’d
Cryostat assembly enclosure Same as above with the following additional features:
Removable floor panels.Removable floor seal.May need temporary/removable floor structure, other than floor panels,
to support personnel in working configuration.Used in conjunction with Shield and Cryostat assembly enclosures below
the floor.Requires flexible seal between walls and the 300K Flange.
Shield Enclosure Attaches to the Clean Room floor flange and the top of the Shield. Effective with the
shield lowered or raised, and in between.NOTE: at the moment, possible conflicts with the MUON veto system have NOT been
considered. Flexible membrane. Under inflation pressure, the membrane follows the Shield as it is
lifted into operating position.Used in conjunction with the Cryostat assembly enclosure, above.
Cryostat Loading enclosure Attaches to the Clean Room floor flange and the Shield elevator deck, below the Clean
Room floor. Flexible membrane. Under inflation pressure, collapses upward as the elevator and it's load rise to the Clean Room floor elevation.
Effective with the elevator lowered or raised, and in between. A method for detaching the membrane at the elevator deck for loading is
under study at the moment but not yet articulated.
04/19/23 Robin Lafever LBNL, LNGS 100
Testing
04/19/23 Robin Lafever LBNL, LNGS 101
CUORE Door seal test set-up
DeStaCo Clamp 91140
Doubler plate to allowblind-tapped holes for mounting screws
Test Gasket specimenTop shown removed
04/19/23 102Robin Lafever LBNL
Robin Lafever LBNL 103
CUORE Door seal test set-up
Top shown installed
04/19/23
04/19/23 Robin Lafever LBNL 104
CUORE Door seal test set-upREDUCED VOLUME
Material: 5mm thick SS
All joints TIG Welded
04/19/23 Robin Lafever LBNL 105
CUORE Door seal test set-up
Pressure Seal configuration
04/19/23 Robin Lafever LBNL 106
CUORE Door seal test set-up
Pressure Seal configuration
Material: 5mm thick SS
All joints TIG Welded
04/19/23 Robin Lafever LBNL 107
CUORE Door seal test set-up
Pressure Seal configuration CLOSURE DETAIL
04/19/23 Robin Lafever LBNL 108
CUORE Door seal test set-upCUORE Door seal test set-up
Pressure Seal configuration CLOSURE DETAIL
Acrylic Test box for Sealants and Tapes Small box- 1 meter seal length
04/19/23 109Robin Lafever
Acrylic Test box for Sealants and Tapes Large Box- 2 Meter seal length
04/19/23 Robin Lafever 110
Acrylic Test boxes with N2 plumbing
04/19/23 Robin Lafever 111
Acrylic Test Box Tape folding detail
04/19/23 Robin Lafever 112
Acrylic Test Box Tape folding detail
04/19/23 Robin Lafever 113
Acrylic Test Box Tape folding detail
04/19/23 Robin Lafever 114
Acrylic Test Box Tape folding detail
04/19/23 Robin Lafever 115
Acrylic Test Box Tape folding detail
04/19/23 Robin Lafever 116
Soft enclosure Full scale test set up
04/19/23 Robin Lafever LBNL, LNGS 117
2 Meter dia. Radon Room set up
04/19/23 Robin Lafever LBNL, LNGS 118
2 meter enclosure Radon Room test set up in LNGS office
04/19/23 Robin Lafever LBNL, LNGS 119
04/19/23 Robin Lafever LBNL, LNGS 120
04/19/23 Robin Lafever 121
The End