1. ATLAS ITk Baby-DEMO update
Claudio Bortolin (EP-ADO-PO)
Piotr Dziurdzia (EP-ADO-PO)
Dina Giakoumi (EP-DT-FS)
Bart Verlaat (EP-DT-FS)
Lukasz Zwalinski (EP-DT-FS)
ATLAS cooling team – 2016

2. BD1 status Document concerning Baby Demo chiller requirements- done
P&ID of BD chiller- done
Components for chiller has been selected according to P&ID
Offer for BD chiller from CUT – received and launched
P&ID of CO2 side – done
Calculation for pipe sizes of CO2 side and components selection according to P&ID – to be done
BD1 chiller order almost sent out (final discussion for the purchase taking place)
BD1 CMS contribution confirmed, pump quotation received. Discussion on pump requirements with LEWA on going.
BD1 accumulator offer received and thanks to the contribution of Grenoble the order has been sent out

3. P&ID of Baby DEMO plant

4. BD SR1 cooling test set-up

5. BD2 Infrastructure and services
Basement routing defined, compressed air dew point measurement still to be done.
Electrical Cabinet
PP2 box with
PT & TT Sensors
Cooling Station
PP1 box with
PT & TT Sensors
Foam box with detector measurements
Waiting for an offer from HSE for the integration of a CO2 sensor into the gas detection system of the building.
PP2 box with
PT & TT Sensors

6. Tank volume calculation
The tank volume has been calculated taking in account the operative conditions: max and min T and maximum pressure, vapour quality and the max and min tank filling mass allowed. The inlet parameters are mainly the transfer lines dimensions, so the required volume to fill the lines and the ratio (Ral) of the tank volume obtained is about 2.35 times the transfer lines volume which means a total amount of 43kg of CO2.

7. Risk assessment matrixNo
Incident
Where
Likelihood
Severity
Result
Actions
Results after actions suggested 1
CO2
Over pressure
Plant
Very Low
[1]
Minimal
[A] A1
No actions required 2
Transfer line
Basement
Very low
High
[D] D1
Actions required to reduce the risks
CO2 signals +
CO2 sensor connected to an acoustic alarm of CO2 release+
Ventilation system to suck CO2 from the floor of the basement. 3
Leak
Medium
[3] A3
CO2 signals close to the station area 4
Medium [3] D3
Unacceptable risk: Immediate actions required to reduce the risks

8. Piping integration in UX15
Proposals for the locations for the PP2 manifold and the transfer lines routing into the Barrel region based on on-site investigation that took place last June: done
Raphael Vuillermet confirmed that an engineer arriving at CERN in Dec 2016 will work on the CATIA models for the piping integration of the ITk cooling.

9. Status Next steps Rigid line 18480 mm DAQ hardware completed
DAQ software development ongoing
Flex lines design done
Flex lines parts offers received
Status
Rigid line mm
Flex line 9550 mm
Flex lines parts order to be placed
Rigid lines diameters definition
Rigid line material procurement
Piping and insulation installation
Sensors installation
Next steps
Flex line
13740 mm
Rigid line
16700 mm
Flex line
6530 mm
Manpower required for the installation in b. 18,. I. Ilyashenko of S. Petersburg interested

10. Flex lines design status
Designer: Sven Vogt (MPI)

11. Flex lines Costs (all offers received):

12. Flex lines MLI insulation
Assembly of a prototype will start soon
MLI (10 layers) samples sent by RUAG (Austria) delivered to CERN to test the installation procedure:
1x Coolcat 2 NW stripe 0.2 x 2m laser cut
1x Coolcat 2 NW stripe 0.2 x 2m laser cut with additional ultrasonic spot welds (about every 300mm) in longitudinal direction on both sides with 25 to 30mm distance to the laser cut edges
1x Coolcat 2 NW stripe 0.2 x 2m laser cut with 5mm laser cut slits in longitudinal direction that hold the single layers together.
3 m of flex pipe sample being shipped by Witzenmann (Germany)

13. PP1 box design: 1 line with warm nosing
Warm nose loop
Vapor return
Liquid feed
Dry-air volume
Detector volume
If the detector boundary becomes the dry-air boundary than warm nosing is not possible!
Well accessible standard VCR type connectors + Electrical breaks
IDEP
Slide taken from presentation of B. Verlaat (ITk cooling meeting )
Status from Cecilia Rossi (Genova):
Warm nose heat exchanger dimensioning calculations done, design of the HX and splitter box being started

14. BD2 conclusions
Barrel mockup moved to the final position in b. 180 and ready to be equipped with the piping. CO2 volume and pipes length defined. DAQ hardware procurement done and software development ongoing.
Safety matrix and risks reduction approved by HSE. CO2 sensor integration in the gas detection system is a possible solution, waiting for an offer from N. Broca (HSE).
Agreed with the project office of ATLAS to allocate manpower for the fluid distribution integration in UX15 (3D modeling). Designer available from January 2016.
Sven V. (MPI) completed the design of the flex lines. Witzenmann is ready to produce and assembly the whole set of flex lines, ready to place the orders of the components. Insulation installation procedure to be tested soon.
Design of the HX and splitter box being started in Genova (Cecilia).
Manpower required for the installation in b. 180.
I. Ilyashenko and S. Petersburg showed their interest on this project.
Next ITk cooling meeting taking place on 26th October: