GIF ENVIRONMENTAL AND GAS SENSORS UPDATE August 12
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GIF++ ENVIRONMENTAL AND GAS SENSORS UPDATE August 12, 2015 Contact: stefano. bianco@lnf. infn. it Laboratori Nazionali di Frascati dell’INFN Stefano, Ernesto, Roberto RPC crew: Nicolas, Salvador, Fabiola, Gabriella et al CSC crew: Katerina, Armando Frascati crew: Luciano, Alessandro, Daniele, Luigi, Davide, Saleh Bologna crew: Marino, Alessandro, Davide Bari Crew: Anna et al rs nso e S f i /G c i l b u P : https i. ce k i w t // rn bin / i k i w. ch/t MS C / w /vie 1
• Monitoring (for both atmospheric and gases) • Pressure p • Temperature T • Relative humidity H • Modular architecture • Six gas sampling points: • GASBOX 101, 102, 103, 104, 105, 106 • Four atmospheric sampling points • ENVBOX 201, 202, 203, 204 2
• Twiki page is now in public WEB – • https: //twiki. cern. ch/twiki/bin/view/CMSPublic/Gif. Sensors Email helpdesk from a CERN registered email account – gifsensors-helpdesk@cern. SPAMNOT. ch QR code labels to be updated and replaced 3
TEMPERATURE ABSOLUTE CALIBRATION • All GASBOX and ENVBOX tested in Frascati and CERN – Compared to reference thermometers (FLUKE and DIGITRON) • Calibration at CERN suggests an offset <TBOX-TREF> ~ 0. 6 o. C attributed to the CAEN ADC. FINAL RESULTS COMING UP 4
HUMIDITY ABSOLUTE CALIBRATION • All GASBOX and ENVBOX tested in Frascati and CERN – Compared to reference RH hygrometer (DIGITRON) with air • No offset within design resolution • GASBOX 102 compared at CERN by Ernesto with Dew Point Hygrometer flushed with RPC gas – Calibration at CERN suggests a very large scale factor RHBOX / RHDPH ~ 0. 6 • Plan: – Check two more GASBOXEs not in use – Check DPH with air 5
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LABELS (TBD) AND NAMING • GASBOX 101, 102, 103, 104, 105, 106 • ENVBOX 201, 202, 203, 204 (no P sensor) 7
GASBOX and ENVBOX (centimeters) The 15 GASBOX 8 CERN grou radia p is go ing t tion o pro shiel Desi vide ding gn in s. prog ress 22 22 11 ENVBOX 8
Environmental Sensors: specifications T, H sensor PCMini 70 Michell p sensor TSA Gefran CAEN ADC 3801 Stainless steel housing for use with F- 9
Gas & Environmental sensors CAEN ADC INTEGRATED IN DCS SENSORS CONTROL UNIT SENSORS BOX 30 m CABLE 10
Some more pictures GIF sensors back (env connectors) GIF sensors Rack Front GIF sensors CAEN Crate 11
