1. GIF++ ENVIRONMENTAL AND GAS SENSORS UPDATE
August 12, 2015
Contact:
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

2. 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

3. Twiki page is now in public WEB
helpdesk from a CERN registered account
QR code labels to be updated and replaced

4. 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

5. 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

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

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

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

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

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