Cooling Plant

Definition of the cooling plant of the Barrel EMC. Preliminary version to show the concept. Authors: P. Rosier, C. Le Galliard, January 2011:

link to EDMS (EDMS account required)

Definition of the chiller of the cooling plant (P. Rosier) Jan. 2014

EMC-COOLING-Plant-Chiller-140113.pdf

Prototype Cooling

A prototype cooling system for the forward endcap and one barrel slice was developed at IPN Orsay. Currently (2016) it is located at the Ruhr-Universitaet Bochum.

• Eurodifroid_leakless_pump__User_manual.pdf: User manual: The cooling system

• 2015-07_NOTICE_COMPLETE_RETROFIT.pdf: Eurodifroid cooling machine technical manual

Environmental conditions in the PANDA hall (as of 2021)

H0417A.E10.200 (beam area)

• Temperature: min. 20°C, max.26°C
• Rel.humidity: min. 30 % rel. H., max. 40 %rel. H
• Maximum dew point 11.5°C

H0417A.E10.201 (set up area)

• Temperature: min. 20°C, max.26°C
• Rel.humidity: min. n/a, max. 70 %rel. H

General Parameters for the Cooling

Calculation of required cooling power from the flow and temperature difference:

Barrel EMC

Thermal Load (E-Mail Thorsten Erlen 18.2.22)

• Total 6000 W with temperature difference of 0.7 K (at 12 l/min per slice)
• And in addition about 1000 W per slice from backplane electronics in support beam
• Per slice: flow 12-15 l/min main and 1-5 l/min front cooling (and back flow through support beam)
• Total flow 320 l/min (= 11 kW @0.7 degrees)
• Estimation of 16000 W for barrel @ delta T = 1K

Forward Endcap EMC

Thermal Load (E-Mail Sebastian Coen 18.2.22)

• Total 2459 W
  • 2315 W main cooling (APD modules 633 W, VPTT modules 119 W, insulation 156 W, cable feedthroughs 1407 W (+25 degree outside temperature))
  • 64 W side cooling
  • 80 W front cooling
• With temperature difference of 1 K resulting in a flow of 50.5 l/min. --> 60 l/min

Backward Endcap EMC

Thermal Load (Presentation 8.6.2017)

• Total 300 W

Design requirements for the Cooling Machine

• Total flow: 25 m^3/h
• Total cooling power: 100 kW
  • Thermal load detectors: 16 kW + 3000 W + 300 W = 20 kW
  • Thermal load heat regulation for 25 m^3 and 2 K difference: 40 kW
  • Thermal loss due to pump, cooling circuits, etc. (1.8 K): 37 kW
• Temperature: -30 ºC
• Pressure drop in heat exchanger: less than 1 bar

-- FritzHerbertHeinsius - 23 Feb 2022