RICE-II Engineering Deployment Kenneth Ratzlaff John Ledford

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

RICE-II System Plan

2005 -2006 Goals • Wet Hole Goals (in cooperation with Ice. Cube. ) – 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 Ice. Cube) – 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, SRC 1, SRC 2. Reel + Pallet, 550 lb. each. • Positioned with chocks; held down with aircraft cable and turnbuckle. • SRC 5 contains reel stand, shaft components, brake components, tape, carabineers, Allen keys.

Cable • SRC 1: 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. • SRC 2: 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 Ice. Top trench.

Support -- Ice. Cube • 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. >5 C 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