GIF ++ ambient condition The Prep. area outside Tent and its gradient CSC area Geneva meteo station Ian Crotty6 Oct 2015.

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Presentation transcript:

GIF ++ ambient condition The Prep. area outside Tent and its gradient CSC area Geneva meteo station Ian Crotty6 Oct 2015

Tent Inside with x2 AC units Building a tunnel across the width of the GIF++ Upstream

Analogue gauges (rad hard) Saleve T1 Front Korea T0/3 T1 Jura in front of AC Gauges calibrated and checked to within ± 0.3degC

In the beginning Unstable data and high temps in July August 2015

Temperatures Sept Supply RPC gas 203 Prep area 201 RPC tent 102 Return RPC gas 202 CSC env Access Wednesday 23 sept 2015 Stable tent temp !

CSC Temp RPC Temp Return RPC Gas Temp Prep. Area Temp Supply RPC Gas Temp Set point change 16-18degC The gas return temperature follows the indicated Tent temp ?

Humidity RH% 201 RPC tent 102 Return RPC gas 203 Prep area 10 days

Structure is perhaps due to the AC cycle 10-20mins Humidity RH%

Temp & RH in Tent & CSC Set point change from 16deg C to 18degC and both AC on, one was off on Saleve side. 201 RPC tent 201 RPC Humidity 202 CSC Humidity 202 CSC temp. 10 days

203 Prep Area RH 201 Prep Area RH 201 RPC Temp 202 Prep Area Temp 203 Prep Area RH 203 Prep Area Temp 10 days Temp,RH & RH in Tent & CSC

Conclusion 4 deg temperature gradient in the tent perhaps mostly vertical as the fans are weak. To be investigated, both inside and outside, and mitigated if confirmed. RH values are approx. 35 – 50% Stable 20degC values with less than 0.5degC gradient within the tent are NOT yet achieved. RPC area is indicated as 3-4 degC less than the CSC zone. The RPC tent is stable (±0.5) up to set point change, slow response. Gas supply temp is higher (2degC) than Prep Area, perhaps as the gas rack are higher up. Gas return is higher than recorded tent temp. due to gradient in height. Gas return temperature takes the chamber temperature, to be verified.