GIF++ ENVIRONMENTAL AND GAS SENSORS UPDATE

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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 https://twiki.cern.ch/twiki/bin/view/CMSPublic/GifSensors

Monitoring (for both atmospheric and gases) Pressure p Temperature T Relative humidity H Modular architecture Six gas sampling points: GASBOX101,102,103,104,105,106 Four atmospheric sampling points ENVBOX201,202,203,204

Twiki page is now in public WEB https://twiki.cern.ch/twiki/bin/view/CMSPublic/GifSensors Email helpdesk from a CERN registered email account gifsensors-helpdesk@cernSPAMNOT.ch QR code labels to be updated and replaced

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> ~ 0.6oC attributed to the CAEN ADC. FINAL RESULTS COMING UP

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 GASBOX102 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

LABELS (TBD) AND NAMING GASBOX 101, 102, 103, 104, 105, 106 ENVBOX 201, 202, 203, 204 (no P sensor)

GASBOX and ENVBOX (centimeters) 15 The CERN group is going to provide radiation shieldings. Design in progress 8 GASBOX 22 22 11 ENVBOX

Environmental Sensors: specifications T, H sensor PCMini 70 Michell p sensor TSA Gefran CAEN ADC 3801 Stainless steel housing for use with F-

Gas & Environmental sensors CAEN ADC INTEGRATED IN DCS Gas & Environmental sensors SENSORS CONTROL UNIT 30 m CABLE SENSORS BOX

Some more pictures GIF sensors back (env connectors) GIF sensors Rack Front GIF sensors CAEN Crate