LNGS Scanning Station

Nicola D’Ambrosio (LNGS group)

Maiori, 4-6 June 2007

CS Scanning Station: presently activities

• CSd measurement and analysis

• On-Line and off-line ESS improvements (New Filters, brick X-ray measurement, …)

• CS Scanning improvements (soft../Hard…)

• CS X-Ray system development and

management

• Automatic emulsion changer (oil option)

development

• Bricks / CS handling and shipment

organization …

• General maintenance (lab environment, network,

processing PCs)

• PENAUT analysis

Scanning station: April 2007 run

2 shifts/day - 1 Physicist /shift (LNGS people available and on-call)

4 microscopes dedicated : used only 3 (1 microscope had a camera problem, now solved)

- 1 microscope used for PENAUT analysis -

- 1 microscope at TecnoCut for automatic changer tuning -

Week 20Week 20

14-20 May14-20 MayWeek 21Week 21

21-27 May21-27 MayWeek 22Week 22

28-1 May-June28-1 May-June

MarilisaMarilisa AlessandraAlessandra FrancescoFrancesco

LucaLuca AndreaAndrea

Scanning station shifts List(April 2007 Run)

A new call is under way for 1÷2 weeks in June

CSd measurement started on 17/5

Scanning station CSd analysis(April 2007 Run)

• 18 CSd measured from first extraction

• 19 CSd measured from second extraction

37 CSd in 11 Days

(36÷15 cm2 around prediction)

Detailed results of this analysis will be presented by

Luillo

On-Line scanning parameters tuning needed on “real” CSd emulsion

No information on efficiencies for “large angle” ( > 400 mrad)

We need a new set of emulsion for efficiencies check• using “presently” CSd-like emulsion + large angle set

New test beam ?

Comments

Scanning station : 2007 September Run24 hours/day

6 microscopes operative

3 shifts/day (8 hours) - 2 person/shift (1 Physicist from the collaboration,

1 ext. man power )

~ 1 CSd / system / day (considering also NC)

In total 6÷8 CSd/day can be analyzed at LNGS

Scanning station : near future plan

Setting Up of the CS Analysis parameters(On-Line and Off-Line)

Re-Measurement of the CSd (April 2007 run)

A soon as they are available -> tuning of the other 3 microscopes

Tuning of the data flow into the computer infrastructure

(Data access via Central DB !!!)

Emulsion

ScotchTape

Vacuum channelCSD full surface analysis: Emulsion on scotch

tape

CSD full surface analysis

• Preliminary quality test DONE : CSD prediction from August Run measured and confirmed

Event found 98 times on 100 measurements

Future tests: new scotch, un-gluing emulsion effects, precise measurement near the border.

• Presently we manually glue the emulsion on scotch with a “simple tool”: not so easy to get good result

• Professional gluing machine will be soon available (Bologna)

• New prototype of glass with large perimeter channel is under construction (Bologna)