CLOUD experiment

Experimental Areas Technical Meeting, 3 June 2014https://indico.cern.ch/event/322360/

CLOUD office and meeting roomAntti Onnela, PH-DT, CLOUD Technical coordinator and GLIMOS

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CLOUD experiment

CERNAustria:University of Innsbruck

University of ViennaFinland: Finnish Meteorological Institute

Helsinki Institute of PhysicsUniversity of Eastern FinlandUniversity of Helsinki

Germany: Johann Wolfgang Goethe University FrankfurtKarlsruhe Institute of TechnologyLeibniz Institute for Tropospheric Research

Portugal: University of Beira InteriorUniversity of Lisbon

Russia: Lebedev Physical InstituteSwitzerland: Paul Scherrer Institute

Tofwerk AGUnited Kingdom: University of Leeds

University of ManchesterUnited States: Aerodyne Research Inc.

California Institute of TechnologyCarnegie Mellon University

• Studies the influence of galactic cosmic rays on the Earth's climate through the media of aerosols and clouds.

• Uses CERN’s PS T11 beam as artificial ‘cosmic rays’, up to 100x natural levels.• Multi-disciplinary collaboration of 20 partners from 8 countries:

EATM Meeting, 3 June 2014 / CLOUD, A.Onnela

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CLOUD in the PS East Hall


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CLOUD in the PS East Hall


Note that between runs all measurement instruments return to their home institutes for other campaigns.

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CLOUD experiment

• 2006: Approved as CERN experimentTechnical pre-run with a 8 m3 chamber in the East Hall T11 area.

• 2008-2009: Design and construction of 27 m3 aerosol chamber Modification of East Hall T11 area to accommodate the chamber, its supplies

and measurement instruments• Until now 8 beam-runs of 1-3 months. 9th in autumn 2014.


• Continuous upgrades between beam-runs:Gas system and its controlsThermal system (-70C operation, temperature measurements)UV-systemsAdditional / improved measurement instruments

Run Month Year AimCLOUD1 Nov–Dec 2009 CommissioningCLOUD2 Jun–Jul 2010 Binary H2SO4 and NH3 ternary nucleationCLOUD3 Oct–Nov 2010 Binary H2SO4 and NH3 ternary nucleationCLOUD4 Jun–Jul 2011 Dimethylamine & pinanediol ternary nucleationCLOUD5 Oct–Nov 2011 Free tropospheric binary H2SO4 & NH3 ternary nucleationCLOUD6 Jun 2012 Initial cloud formation (cloudy) experimentsCLOUD7 Oct–Dec 2012 NH3, dimethylamine & alpha-pinene ternary nucleation & growthCLOUD8 Oct-Dec 2013 Low H2SO4 nucleation & cloudy expts. (aqueous phase & ice, with GCRs – no

PS) CLOUD9 Sep-Nov 2014 Cloudy experiments (aqueous phase & ice) & small ion studies

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CLOUD experimentCLOUD is a unique research facility, combining: • High-energy particle beam• State-of-the-art aerosol chamber:

o Temperature stability: <0.1°Co Temperature range: from -70°C (in 2015: -90°C) to +30°C; cleaning at +100°Co Surface cleanliness: <10 pptv (10 x 10-12) organics contamination,

stainless steel (and gold), no teflon, no O-rings o Ultrapure gas supplieso UV system: negligible heat load by use of fibre opticso Field cage 30 kV/m

• Best suiting measurement instruments brought from the institutes for each run.

• CLOUD’s scientific potential is proven to be very higho Results published in Nature 2011 and 2013, Science 2014, and several scientific proceedings.

• The field of studies ahead is largeo Scale: Further 10 years

• Bottle-neck of CLOUD activities at CERN: lack of office and meeting room space.o CLOUD team has grown in number of scientists resident at CERN or visiting during runso Daily run coordination meetings are crucial and need to involve also people off CERN.


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Space available / needed

Space currently available for CLOUD• T11 beam area• T11 control room• Cryogenic fluid and gas storages outside East Hall• Shared material storage space inside East Hall (for heavy equipment like racks)• Small storage room in the basement of building 13 (for delicate equipment)• 3 offices on temporary loan from PH-DT group in building 17, used by 6 CLOUD

fellows and studentso The PH-DT group needs to get these offices for their use.

Space needed• Office space for the 6 fellows and students resident at CERN.• Office space for scientists visiting CERN during beam runs.

o Must be close to T11• Meeting room

o Daily data analysis and run planning meetings during data taking campaigns, with up to 30 participants + Videoconferencing equipment to involve scientists off CERN.Must be close to T11.

o Weekly technical and physics meetings for CERN team, including videoconferencing with the CLOUD Analysis Working Group members in other institutes.EATM Meeting, 3 June 2014 / CLOUD, A.Onnela

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What could be the solution?

1. Existing space from PH department?o NO. Requested since the beginning of CLOUD. Due the general lack of space no solution

has been found. With the growing number of CERN users (essentially in PH department) the situation does not seem to improve.

2. Existing space from some other department?o VERY UNLIKELY. The Meyrin area close to T11 lacks office and meeting space in general.o Let me know if there are opportunities!

3. A new, small building at the proximity to the East Hall? One single multi-purpose room addressing all space needs:o Open office for the CLOUD fellows and students resident at CERN, as well as for visiting

scientists. o Meeting room for daily data analysis and run planning meetings during measurement

campaigns, and for weekly technical and physics meetings for CLOUD CERN team.


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Possible solution?


Here an example: bat. 3893 made of 2 pre-fabricated units at LHCb site (LHC Point 8)- Full dimensions 6 m x 7.5 m- Open space, modulates between meeting and office use.

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Possible location for a bungalow?


• Must be close to T11 where all work takes place, in particular during measurement campaigns.

• For radiation protection reasons cannot be inside bat 157

• Following initial discussions involving Raul Fernandez Ortega (GS-SE), Lau Gatignon (EN-MEF), Michael Lazzaroni (EN-MEF, TSO of 157), Antti Onnela and Robert Kristic (CLOUD) the area between bat 512, 251 and 352 seems best suited.

T11

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New “bat 657” ?


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New “bat 657” ?


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New “bat 657” ?


Doors

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New “bat 657” ?


•~ 6 m x 6 m•Initial cost estimate: 50 kEuro, including foundations and electricity.•Use existing sanitary facilities in b. 512 (already used from East Hall)

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Summary• CLOUD has no access to adequate office and meeting room space.

Particularly problematic during beam runs. Time scale of the need: 10 years.• The office/meeting space needs to be close to East Hall / T11.• No solutions amongst existing facilities has been found.• A multi-purpose open-space office/meeting room would be a well-matching

solution.• Preliminary study of a new “building 657” located close to East Hall.

• Now going through involved technical parties:o East Hall TSO and Radiation protection: a priori OK.o Experimental Area Technical Meeting: Today.o PH Space Policy Board SPOB: To be done.o Others?

• Financing to be agreed. Consider also rental.o Investment cost estimated at ~50 kEuro, including foundations and electricity.


Thank you for your attention. Comments, feed-back ?

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Spare slides


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CLOUD systems


Large size beam

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Slow data collection rate in CLOUD• The measured processes are slow.• Typically only few data points collected per beam day; All beam days are precious.


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CLOUD Facility

• Aerosol chamber (27 m3, ultra-high cleanliness)• Platforms at chamber mid-level and top• Beam and cosmic ray hodoscopes• Thermal housing and ventilation system• Thermal measurement and control systems• UV systems• Gas and water supply and control systems• Dewars and Gas supply racks (located outside East Hall)• Expansion system • Electrical supplies, including HV.• DAQ and on-line monitoring systems (in the T11 counting room)• Thermally controlled racks for measurement instruments


Documents

CLOUD experiment