Low background Screening and Prototyping Facility

at the Soudan Underground Lab

40’ x 35’ x 100’ cavern surrounded by a 99% efficient active muon veto

SOLO HPGeJim Reeves: Cu Electroforming SBIR + Cu screening detector (microBq/kg)

Diode M (35%)Twin (75%)UF detector (100%)

Low background Screening and Prototyping Facility

at the Soudan Underground Lab

CDMS offices

CDMS Aux Clean RoomBFand SiLi detector

Veto shield repaired last summer DAQ: location & time stamp for each muon

• Four HP Ge detectors for gamma screening. Two in existing lead-shielded SOLO facility (Brown, PNNL)Third from U. Florida startup, 4th Clover Well Detector (NSF MRI)

• Two alpha/beta screeners (via alternate funding) neon gas MWPC (Caltech, CWRU, FNAL)

triggered expansion cloud chamber (UCSB, UMinn)

• Underground electroforming facility to make high purity copper(Reeves & Sons via awarded SBIR)

• Ge Detector fabrication (pending SBIR with Princeton Gamma Tech)

• Clean Machine shop

• Water tank with multiple top-loading ports in clean room on top

• Multipurpose clean room with shielded bays for prototypes

• Radon-scrubbing for all clean rooms

Full Proposal includes the following features

Ante-room Ante-room

Multi-purpose clean room

Clean room over tank

Water ports with crane

Electro form

40 ft

Upper mezzanine above tank top

Use

r sh

ield

ing

Clean room over tank

anteroomClean room

Clean room

Water tankShieldedbays

mezzanine

anteroom

radon scrubbing plenum.

stairs

current mezzanine

Muon veto shield

Muon veto shield

Muo

n ve

to s

hiel

d Muon veto shield

100 ft

Drawings and Design Consultation: Short Elliott Henderson Engineering, Inc

Medtronics “suitcase” experiment (soft memory errors)

COUPP dark matter prototype (J. Collar)

Copper electroforming (Reeves: SBIR Phase I & II)

But we are open for business right now.

see http://www.hep.umn.edu/lbcf

Procedure:

Fill out an Experimental Planning Form

Fee structure is established with ESO

Signers of EPS so far…

Experimental Planning Statement for the Low Background Counting FacilityA statement with the information detailed below, together with the signature sheet, must be submitted to the Soudan Underground Lab Manager before any experiment can be approved for installation in the Low Background Counting Facility. This will ensure that any new experiment does not interfere with either the of the two existing large experiments or with public tours, as well as reviewing safety and code-related issues. 1. Project Title and Description, incl. list of collaborators, institutions, and funding sources. 2. Experiment Area and Infrastructure Needs.This section should include physical area needed, both underground and on the surface, connections needed between surface and underground installations, electrical power needs, LAN bandwidth, and any special air handling requirements. There should also be list of number phone or fax lines needed. Depending on the area needed or type of the experiment, are there additional fire or life safety infrastructures needed? 3. Project ScheduleSchedule should contain any construction period needed for infrastructure, detector assembly, operation period and removal of experiment. An estimate of access (and access schedule, including on-call emergency access) should be included such that hoist costs directly related to the experiment can be properly calculated. A description of the load size and weight of the cage is available. 4. Hazard AnalyzesA complete list materials to be brought underground and waste products to be removed. Any possible physical hazards should be listed. All materials should have MSDS sheets appended to this document. Any material handling issues should also be noted. Assessment of this issues, especially the ones that fall under the safety category, need to be addressed by both the U of M and DNR who are responsible for site safety. 5. Minecrew LaborAn estimate of minecrew labor needed should include any construction or operation manpower requirements. As a general rule, all non carry-on equipment must be moved underground by the minecrew. A trained and designated cage rider must be present underground at all time if access for non-standard shifts is needed.6. Surface Space RequiredList any space usage needed in Surface Building for staging or remote operation, including control rooms and computers (there is a fiber optic connection to the underground lab). Also list any space required that cannot be accommodated inside the surface building for parking, staging or general material storage.

Project Title:____________________________________________________ Prof. Earl Peterson ______________________________________University of MinnesotaSoudan Underground Lab Director eap@mnhep.hep.umn.edu

Mr. William Miller ______________________________________University of MinnesotaSoudan Underground Lab Manager miller@sudan.umn.edu

Mr. Paul Wannarka ______________________________________ Department of Natural ResourcesSoudan Underground Mine State Park Manager paul.wannarka@dnr.state.mn.us

Dr. Regina Rameika ______________________________________Fermi National Laboratory MINOS Operations Manager rameika@fnal.gov

Dr. Dan Bauer ___________________________________________Fermi National LaboratoryCDMS II Project Manager bauer@fnal.gov

Prof. Priscilla Cushman ____________________________________University of MinnesotaManager of the Low Background Counting Facility prisca@physics.umn.edu