Atmospheric Plasma Treatment for Veto Dark Side Veto
- Slides: 5
Atmospheric Plasma Treatment for Veto Dark. Side Veto: 200 Components Configuration suggested from IIS 600 mm Series of 20 plasma torches (each torch treats 30 mm) in linear combination 70 kg 2000 mm m 50 m Oscar. azzolini@lnl. infn. it Giorgio. keppel@lnl. infn. it 1
Alternative treatments for Veto of Darkside Flame Treatments Propane or Butane Gases (faster that Plasma Treatments) Atmospheric Plasma Treatments Extra Pure Gases Laser Ablation Treatments Absence of gases (faster that Plasma Treatments Oscar. azzolini@lnl. infn. it Giorgio. keppel@lnl. infn. it 2
Other Points Discussed: 1. Prevention of Re-contamination (reduce at minimum air exposure with LNL standard packaging) 2. Dimensions of samples for Gamma Analysis: IIS treats sample of maximum 100 mm 3. IIS has to identify another company for Flame Treatments: at the moment the quotation is for 54 samples (atmospheric Plasma), any variation of number of samples or Treatment Technique is a variation of cost Oscar. azzolini@lnl. infn. it Giorgio. keppel@lnl. infn. it 3
Atmospheric Plasma Treatment • Surface treatment tests using atmospheric plasma, carried out on acrylic samples measuring 50 x 50 mm 5 mm thick Variables of the experiment: 1. Typology di gas (n. 9 different technical gas) - Synthetic Air(in cylinder) - Ar - He - N 2 - Ar-50%He - Ar-5%O 2 - Ar-5%H 2 - N 2 -5%H 2 - 70%Ar - 20%He - 8%CO 2 - 2%O 2 Oscar. azzolini@lnl. infn. it Giorgio. keppel@lnl. infn. it 4
2. Feed speed (V): For each gas, the tests will be performed at 3 different feed speeds (V 1, V 2, V 3). 3. Nozzle distance (H): for each gas value and speed, 2 different values of the distance of the piece will be performed (H 1, H 2) A total of 54 tests will be carried out. Characterization of samples after treatment (2 samples 10 x 10): The treated samples will be sent wrapped in aluminum foil and sealed in separate plastic bags for UV testing. (WHO? Transparency? ) FT-IR investigations performed before and after the treatment, and SEM micrography after the treatment. (IIS) Time and cost: The activity could start in late July or Beginning of September. The cost for what described is equal to € 6, 200 + VAT. This list takes into account both operating costs and the FT-IR-SEM carried out on 2 samples and gas cylinders. Oscar. azzolini@lnl. infn. it Giorgio. keppel@lnl. infn. it 5
