fbr sd20040307

PIERRE AUGER OBSERVATORYFinance Board Review: 

PIERRE AUGER OBSERVATORY Finance Board Review SD Assembly & Deployment and Site Issues Malargüe, March 19, 2004

Southern Array Layout: 

Southern Array Layout

Southern Array Layout: 

Southern Array Layout Total area > 3000 km2 Lat.: 35,0o - 35,3o S Long.: 68,9o - 69,4o W Altitude: 1300 - 1500 m.a.s.l. Topography: flat, some elevations at the periphery Vegetation: small bushes and grass, thornbushes, cortadera Soil and accessibility: 60% clay (with swampy areas), 30% gravel (thornbush), 5% dunes, 5% dense pampa grass 4 FD eyes at the periphery: Los Leones Coihueco Los Morados Loma Amarilla Landowners: more than 100

Survey and Mapping: 

Survey and Mapping Full site survey done Satellite images: SPOT I (CONAE) Landsat 7 (CONAE) IGM Mr. SID (NASA) UTM, WGS 84 coordinates used Tank position survey (surveyor): Find and mark (with 2 stakes) theoretical positions Survey and classify access road Enter in Mdb database

Survey and Mapping: 

Survey and Mapping

SD Assembly: 

SD Assembly Assembly and deployment staff: 10 technicians teams for assembly, deployment and water delivery 6 technicians can prepare 16 tanks in 1 week (normal working hours)

SD Assembly: 

SD Assembly

SD Assembly: 

SD Assembly receive and inspect tanks and components clean tanks and move inside AB (batches of 8 tanks) dimensional measurements of tanks installation of vent and drain tubing, tank inside preparation hatch preparation and hatchcover installation, dome preparation and installation cabling for solar power and sensors liner testing (in "galpon") (with assistance from UTN-Mendoza) insert and inflate liner PMT and LED installation, potting, and testing solar panel brackets, solar panel, antenna mast, "pipe" battery box preparation Input in Mdb database

SD Assembly: 

SD Assembly Liner testing in "casa-Galpon" by SD assembly staff and technicians from UTN-Mendoza: light leak test bubble leak test at seams, fill ports and windows QA plan

Ground Preparation for SD: 

Ground Preparation for SD Done by contractors Requirements: levelness better than 1o clear of stones and sharp objects bigger than 1,5 cm free of vegetation in a radius of 6m (10m for cortadera) inform about soil, vegetation, accessibility

SD Deployment: 

SD Deployment DEPLOYMENT STEPS: Survey to check accessibility, talk to landowners, check ground preparation Flatbed truck delivers 4 detectors per trip. Round trip to positions near Morados take nearly 6 hours, including unloading of tanks.

SD Deployment: 

SD Deployment Small truck with crane positions individual tanks Typically, a crew of 2 Auger technicians + crane driver and 2 assistants can deploy 4 detectors in one day Tank is positioned and oriented, position is measured, battery box, batteries are installed and cables connected. Water is delivered and antenna connected and oriented Electronics installation, testing and turn on

SD Deployment: 

SD Deployment

Water production: 

Water production Water requirements: minimum UV attenuation, no microbial contamination, no nutrients Main features of the water plant: input water from well and city water (improvement in quality) pre-processing (prefiltering, softening, antiscale, chlorine reducer, microfiltering, UV desinfection) reverse osmose treatment (output 100kO.cm) TOC reducer, UV (185 nm) Continuous electrodeionization (EDI) Storage and recirculation with mixed resins bed, UV lamp

Water production: 

Water production Water quality: 15 MO.cm Production rate: 1750 liters per hour - 85 tanks per month Storage tank: 50.000 liters - need upgrade Initial startup difficulties Running without problems for 2 years Programmed stops Industrial chemist in charge

Water testing: 

Water testing At the water plant: conductivity at RO output, production, storage tank biological: samples at production, storage tk, transport tk Ph-Ch: cistern, RO, production During deployment: conductivity, before and after filling, temperature correction bacteriological: samples from some detectors After deployment: bacteriological: every 6 months from selected tanks monitoring through muon signals

Water testing: 

Water testing RESULTS: Serratia (aerobic bacteria) found in low quantities, decaying or constant, evolution monitored

Water testing: 

Water testing RESULTS: Coliforms found in 2 tanks, rapid decay

Water delivery: 

Water delivery Trailer with tank, truck with tank: 2 fillings per trip 1 driver from CNEA San Rafael + 1 technician Auger per team (2 tanks per day) "Pala" (frontloader) to pull trailer, pull truck, prepare access in difficult areas transport tank accessories: filter housing and filters pressure release valve man opening inspection window valve system pump and generator hoses, bayonet)

Water delivery: 

Water delivery

Water delivery: 

Water delivery Increase in deployment rate: 3rd tank (stainless steel) and trailer to be delivered soon (pulled by local trucks and "pala") 4th tank to be purchased No need to increase water plant capacity New storage tank (35000 liters) to be purchased

Present situation: 

Present situation EA: 2000-2001, 40 detectors installed, 32 operational Preproduction: April 2002 - July 2003, 100 detectors installed and operational Production: July 2003 - (cont'd.) Present status: 349 tanks deployed (including EA) 337 tanks filled with water 241 detectors with electronics 222 detectors in operation

Present situation: 

Present situation Waypoints from Mdb:

Present situation: 

Present situation LS Status (by CDAS) - 08/March/2004:

PRESENT STATUS OF THE ARRAY: 

PRESENT STATUS OF THE ARRAY Deployment rate

Schedule and plans: 

Schedule and plans