RICE-II Engineering & Deployment Kenneth Ratzlaff, John Ledford Instrumentation Design Lab The University of Kansas

RICE-II System Plan

Goals Wet Hole Goals (in cooperation with IceCube.) –Demonstrate effectiveness of ADSS cable and document possible failures –Install the Array Calibration Unit – an antenna to “ping” the RICE-I array and the future RICE-II array. Dry Hole Goals (separate from IceCube) –Demonstrate the effectiveness of using OF analog transmitters and receivers. –Test the Utility (Monitor, Test & Control) system in Antarctic conditions.

RICE-II Wet Hole Plan

ACU Control ACU control via SP ethernet to MAPO OR via DIP switches

Fiber Testing An OTDR trace has been recorded for each fiber. During re-freeze, OTDR traces will be collected periodically of all the fibers.

Dry Hole Plan

RICE-II Shipping Plan Removable screws marked in red. (Requires screw gun.) Two reels for wet holes, SRC1, SRC2. Reel + Pallet, 550 lb. each. Positioned with chocks; held down with aircraft cable and turnbuckle. SRC5 contains reel stand, shaft components, brake components, tape, carabineers, Allen keys.

Cable SRC1: two ADSS (All Dielectric Self-Supporting) cables and a shielded quad, taped as a bundle. One ADSS cable is terminated in a cluster housing with OF coiled inside. The second ADSS cable is terminated together with a shielded quad in a housing that will be replaced with a housing holding the ACU. SRC2: two ADSS cables terminated in cluster housings

Deployment Plan -- Mounting Reel may be brought to site by fork-lift on pallet (preferred) or via straps. Reel (~330 lb) is lifted from the pallet with straps through the holes.

Deployment Plan -- Shaft Stand can be carried by two people or lifted with carabineers through holes (if reel is mounted, lift by the reel.) Mount flanges to reel with lag bolts. Slip on bearings and lay in cradles (may be lifted by fork lift with straps or by 4 people with steel rods.) Secure bearing block with Allen wrench.

Deployment – Installing Stand The stand is to be positioned in place of one of the hose reels. The anchors for the hose reel will be used to anchor the stand via heavy-duty carabineers.

Prepare Cluster Housing Cluster housing must be removed from the wall (Phillips driver). One of the four housing bodies must be removed from the head and replaced with a body having an ACU module.

Deployment – Cable Prep The brake on the stand will be set to provide about 30 lb of drag – enough to ensure that if the pull stops abruptly, the cable will remain taut and the reel will not freewheel. The cable will be fed to an available sheave and taped down awaiting deployment into the hole.

Deployment Readiness The brake will be adjusted to keep the cable taut after cluster is taped and awaiting cable deployment.

Cable in Deployment With 200 m of IC cable remaining, braking is reduced and cable-bundle is taped to IC cable. After several tapings, the brake is increased to 150 lb.

Disconnect terminal end When the cable reaches the end, the lag bolts are removed from the clamp and the terminations are carefully removed from the tube. The remaining 30 m of cable then must be unreeled.

Top Termination End of cable co-deployed to IceTop trench.

Support -- IceCube Anchors for the reel stand. Direction where to tape cable on the tower while awaiting deployment. Stop at 200 m to bring RICE cable to the top of the hole and securely tape the cables together. Allow cables to be taped together every 10 meters. Hand tools: screwdriver, screw gun, socket wrench, etc. Make a quad in the IC surface cable available in the Surface Junction Box and the Counting House.

Support -- RPSC –Deliver pallets to the drill location. –Move cable with shaft installed onto the stand as necessary. –Provide a shelter for the post-deployment testing. >5C needed for the OTDR. –Ethernet backbone access for the ACU controller and computer in MAPO with fixed IP Numbers. –Compliance with routers or firewalls for Port 1234

Readiness Reel Stand (with bolts, carabineers, tape, Allen keys, etc.), cables shipped; in CA on 10/21/05. New Reel Stand braking system in progress. ACU circuit and controller circuit under construction. Programming partially complete The cluster housing for the ACU yet to be fabricated. Quad extension, from location of IC cable penetration of counting house to the ACU controller location, is ready to be built.

Instrumentation Design -- ACU

Instrumentation Design ACU Controller -1

Instrumentation Design ACU Controller -2