CUORE Clean Room Robin Lafever LBNL LNGS 9/18/2015Robin Lafever LBNL, LNGS1

Overview Timing Radon-free strategies Radon-Box Concept All N2 assembly Local Radon Abatement Clean Room Layouts PSA studies Extended Clean Rooms Specifications Soft Enclosures Hard enclosures Testing Full scale mockups Proof-of-concept Models Material screening 9/18/2015Robin Lafever LBNL, LNGS2

Overview 9/18/2015Robin Lafever LBNL, LNGS3 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 9/18/2015Robin Lafever LBNL, LNGS4 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 9/18/2015Robin Lafever LBNL, LNGS5 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 9/18/2015Robin Lafever LBNL6 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. 9/18/2015Robin Lafever LBNL7

Default Clean Room layout. This configuration conforms closely to that shown in the Morganti document zeropuntoquindici 9/18/2015Robin Lafever LBNL8

Default Clean Room layout Iso view shows placement of the doors and placement of some of the assembly hardware 9/18/2015Robin Lafever LBNL9

Default Clean Room layout drawing with basic room dimension and floor area 9/18/2015Robin Lafever LBNL10 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. 9/18/2015Robin Lafever LBNL11

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. 9/18/2015Robin Lafever LBNL12

Extended Clean Room layout drawing with basic room dimension and floor area 9/18/2015Robin Lafever LBNL13 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. 9/18/2015Robin Lafever LBNL, LNGS14

Catwalk 9/18/201515Robin Lafever

Catwalk 9/18/201516Robin Lafever

Catwalk 9/18/201517Robin Lafever

Clean Room Layouts 9/18/2015Robin Lafever LBNL, LNGS18

Cuore Hut with stair access 9/18/2015Robin Lafever LBNL, LNGS19

Default Clean Room layout showing Cryostat utility conduit 9/18/2015Robin Lafever LBNL, LNGS20

Default Clean Room layout showing Cryostat utility conduit 9/18/2015Robin Lafever LBNL, LNGS21

Extended Clean Room version A 9/18/2015Robin Lafever LBNL, LNGS22

Extended Clean Room version A 9/18/2015Robin Lafever LBNL, LNGS23

Extended Clean Room version B 9/18/2015Robin Lafever LBNL, LNGS24

Extended Clean Room version B 9/18/2015Robin Lafever LBNL, LNGS25

Extended Clean Room version C 9/18/2015Robin Lafever LBNL, LNGS26

Extended Clean Room version C 9/18/2015Robin Lafever LBNL, LNGS27

Timing 9/18/2015Robin Lafever LBNL, LNGS28

As-built 09 April 2008 Cuore concrete support structure with jack screws in place Cuore site with elevator deck ready for installation 29 Robin 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 TimingBuild-up sequence Support structure with major structural elements in place, including the elevator deck 30 Robin 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. 31 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

TimingClean 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. 33 Robin Lafever CUORE Structure assembly sequence

TimingClean Room idealized The 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. 34 Robin Lafever CUORE Structure assembly sequence

Radon-free strategies 9/18/2015Robin Lafever LBNL, LNGS35 Radon Box The ‘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 and May require negotiated safety equipment and waivers. It will be expensive. All N2 Assumes 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 zones Uses 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 9/18/2015Robin Lafever36

Radon Box concept 9/18/2015Robin Lafever37

Radon Barrier Zones 9/18/2015Robin Lafever38

Radon Box Zones 9/18/2015Robin Lafever39

Radon Box Zones 9/18/2015Robin Lafever40

Radon Box Zones 9/18/2015Robin Lafever41

Radon Box Zones 9/18/2015Robin Lafever42

Doors 9/18/2015Robin Lafever43

Doors 9/18/2015Robin Lafever44

300 K Flange modifications 9/18/2015Robin Lafever45

9/18/201546Robin 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 Radon Seals and cables inside the adapter flange.

9/18/201547Robin Lafever 300 K Flange, MODIFIED Bottom view Note that the Suspension assemblies Are potential Radon leaks and need seals. The details are not known to me, however, I Show an assembly that could incorporate O-ring packing glands.

9/18/201548Robin 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.

9/18/201549Robin Lafever Bottom section Again, note that the suspension Hardware needs a Radon seal Again, this is a potential Radon leak And will need some kind of seal. I do not know what the actual details are.

Soft Enclosures 9/18/2015Robin Lafever LBNL, LNGS50

Soft enclosure Cryostat assembly scenario 9/18/2015Robin Lafever LBNL, LNGS51 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 9/18/2015Robin Lafever LBNL, LNGS54 A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure

2 meter diameter Soft enclosure mockup 9/18/2015Robin Lafever LBNL, LNGS55 A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure

2 meter diameter Soft enclosure mockup 9/18/2015Robin Lafever LBNL, LNGS56 A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure

2 meter diameter Soft enclosure mockup 9/18/2015Robin Lafever LBNL, LNGS57 A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure

2 meter diameter Soft enclosure mockup 9/18/2015Robin Lafever LBNL, LNGS58 A real CUORE scientist demonstrating the range of motion in the 2 meter enclosure

9/18/2015Robin Lafever LBNL, LNGS59

Squeeze Box full-scale mockup 9/18/2015Robin Lafever LBNL, LNGS60

Squeeze Box full-scale mockup 9/18/2015Robin Lafever LBNL, LNGS61

Squeeze Box full-scale mockup 9/18/2015Robin Lafever LBNL, LNGS62

Squeeze Box full-scale mockup 9/18/2015Robin Lafever LBNL, LNGS63

Soft enclosure during Shield installation

Soft enclosure Shield installation scenario 9/18/2015Robin Lafever LBNL, LNGS65

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

Soft enclosure Cryostat assembly scenario Scale Mockup 9/18/2015Robin Lafever LBNL, LNGS73

Hard Enclosures 9/18/2015Robin Lafever LBNL, LNGS74

2.5 Meter Hard Enclosure full scale mockup 9/18/2015Robin Lafever LBNL, LNGS81

2.5 Meter Hard Enclosure full scale mockup 9/18/2015Robin Lafever LBNL, LNGS82

Assembly under N2 default scenario 9/18/2015Robin Lafever LBNL, LNGS83

Assembly under N2 Soft Glove box scenario 9/18/2015Robin Lafever LBNL, LNGS84

Assembly under N2 with O2 mask scenario 9/18/2015Robin Lafever LBNL, LNGS85

Soft glove box detail 9/18/2015Robin Lafever LBNL, LNGS86

Soft glove box detail Top view 9/18/2015Robin Lafever LBNL, LNGS87

Soft glove box detail 9/18/2015Robin Lafever LBNL, LNGS88

Soft glove box detail 9/18/2015Robin Lafever LBNL, LNGS89

Soft Glove box Full scale mockup 9/18/2015Robin Lafever LBNL, LNGS90

Soft Glove box Full scale mockup 9/18/2015Robin Lafever LBNL, LNGS91

Soft Glove box Full scale mockup 9/18/2015Robin Lafever LBNL, LNGS92

Soft Glove box Full scale mockup 9/18/2015Robin Lafever LBNL, LNGS93

Specifications 9/18/2015Robin Lafever LBNL, LNGS94

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. PanelsVendor specified, Metal walls: Al or Stainless honeycomb, Painted steel preferred FloorVendor specified Metal floors: Al or Stainless honeycomb, or solid metal LightsVendor specified, preferably included in filter modules (see below) DoorsVendor specified, number and placement TBD Air Handling/FiltersPreferred: 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-throughs1 pass through from the gowning room to the tower Assembly area and 1 pass though from the tower assembly area to the cryostat area. VestibulesStand-alone unit preferred: Air shower probably NOT preferred How many? 9/18/2015Robin Lafever LBNL, LNGS95

Clean Room Specs WIP Standard Features Continued UtilitiesPower 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 unit Automated wire-bond unit Automated gluing station Fume Hood UPS power supply for critical systems Breaker panels in each room N2 distribution in each room (How many ports) Shop Air Water,deionized,we need a stand-alone system?) Vacuum FurnitureTables, chairs, storage cabinets, TBD (A subset of the PSA cabinets may be required) 9/18/2015Robin Lafever LBNL, LNGS96

Clean Room Specs WIP Special features and additional equipment Utility interfaceVendor supplies interface frame, LNGS supplies utility interface panels, min. 1 for each room. Will include utilities listed above Fume HoodRequires filtration on the output for dangerous chemicals, TBD O2 monitorsRequires interlock with Visual and Audio alarm system Requires O2 monitor Failure alarm Requires interlock with N2 supply Fire sensors/Alarm( Stand-alone, ie. independent of power supply?) ExtinguishersHand held units, consistent with Clean Room use Access finger print type biometric monitor for access to clean room Emergency lightingStand-alone, isolated from power supply Large access doorsMay be removable panels. Required for installation of large equipment and Cryostat assemblies. Location, size, number TBD Portable filter unitRequired for Radon- free enclosures, capacity TBD 9/18/2015Robin Lafever LBNL, LNGS97

Clean Room Specs WIP Special features and additional equipment Cont’d Portable lightingMay be desirable for Radon-free work areas/enclosures Tower assembly stationRequires Hole in the Clean Room floor and access from the room below. Unit supplied by LNGS N2 Glove boxesIncludes hand-assembly areas, Tower assembly station, Wire-bonding station, Gluing station Vibration IsolationCryostat 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 panelRemovable 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 enclosuresDetailed in separate document/page Radon-free air supplyDetailed elsewhere 9/18/2015Robin Lafever LBNL, LNGS98

Clean Room Specs WIP Radon-free Enclosures Detector assembly enclosureLocated 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. (<300m 3 /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 enclosureLocated 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. 9/18/2015Robin Lafever LBNL, LNGS99

Clean Room Specs WIP Radon-free Enclosures Cont’d Cryostat assembly enclosureSame 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 EnclosureAttaches 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 enclosureAttaches 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. 9/18/2015Robin Lafever LBNL, LNGS100

Testing 9/18/2015Robin Lafever LBNL, LNGS101

CUORE Door seal test set-up DeStaCo Clamp Doubler plate to allow blind-tapped holes for mounting screws Test Gasket specimen Top shown removed 9/18/ Robin Lafever LBNL

103 CUORE Door seal test set-up Top shown installed 9/18/2015

Robin Lafever LBNL104 CUORE Door seal test set-up REDUCED VOLUME Material: 5mm thick SS All joints TIG Welded

9/18/2015Robin Lafever LBNL105 CUORE Door seal test set-up Pressure Seal configuration

9/18/2015Robin Lafever LBNL106 CUORE Door seal test set-up Pressure Seal configuration Material: 5mm thick SS All joints TIG Welded

9/18/2015Robin Lafever LBNL107 CUORE Door seal test set-up Pressure Seal configuration CLOSURE DETAIL

9/18/2015Robin Lafever LBNL108 CUORE Door seal test set-up Pressure Seal configuration CLOSURE DETAIL

Acrylic Test box for Sealants and Tapes Small box- 1 meter seal length 9/18/ Robin Lafever

Acrylic Test box for Sealants and Tapes Large Box- 2 Meter seal length 9/18/2015Robin Lafever110

Acrylic Test boxes with N2 plumbing 9/18/2015Robin Lafever111

Acrylic Test Box Tape folding detail 9/18/2015Robin Lafever112

Acrylic Test Box Tape folding detail 9/18/2015Robin Lafever113

Acrylic Test Box Tape folding detail 9/18/2015Robin Lafever114

Acrylic Test Box Tape folding detail 9/18/2015Robin Lafever115

Acrylic Test Box Tape folding detail 9/18/2015Robin Lafever116

Soft enclosure Full scale test set up 9/18/2015Robin Lafever LBNL, LNGS117

2 Meter dia. Radon Room set up 9/18/2015Robin Lafever LBNL, LNGS118

2 meter enclosure Radon Room test set up in LNGS office 9/18/2015Robin Lafever LBNL, LNGS119

9/18/2015Robin Lafever LBNL, LNGS120

9/18/2015Robin Lafever121 The End