Counting house
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Counting house |
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The barracks or counting house names have been voluntary left like they were for the Delphi experiment (D1, D2 and D3) to avoid any confusion.
The third floor is a bit special. We decided to rename it D3. The old names of these to different barracks (forming now the third floor) were A2 and B3. In order to make a distinction between these two parts of D3, it has been decided to call them part A and part B. The other reason to do so is because the air cooling (air-conditioning) is done in these two barrack parts by two different cooling blocks (exchangers).
The racks in the counting house are all of the same type: Recuperated standard 19" LEP racks. Two height of standard 19" racks are available in the counting house, 56 and 59U.
The maximum mains electrical power available is 11kW per rack. The electrical power is distributed in the racks via an electrical distribution box situated on the back top of the racks (behind the turbine unit for the F-E racks). The electrical distribution box offers 7 Burndy output plugs with single phase.
The counting house racks can house a maximum of 2 TELL1 crates (9U crate) with all equipments required like patch panels, TTCoc, Ethernet switch for ECS links, cooling fans, turbine units and heat exchanger. For more information about crates: Electronic crates page
On the links below, the rack list and rack layout for each barrack is given.
| Barrack | Level | Racks (max number and type) | Air cooling | System |
| D1 | 1st Floor | 50 Racks 59 Units | 50 kW | DAQ: Computing farm |
| D2 | 2nd Floor | 50 Racks 59 Units | 50 kW | DAQ: Switches, ECS |
| D3 (A part) | 3rd Floor | 26 Racks 56 Units | 25 kW | Detectors F-E Electronics |
| D3 (B part) | 3rd Floor | 17 Racks 56 Units | 25 kW | Detectors F-E Electronics |
A "database viewer" called "rack wizard" is now available to see the rack layout in the counting house. This rack wizard tool allows the users to enter and place all equipment that will take place in the racks and to link those equipments with cables. For the moment, it is still in a final development phase and the users can only use the rack wizard to view the rack layout.
For this,
Java 1.4.2 or later must be installed
on your computer:
For more information on rack
wizard, the LHC group has made two interesting EDMS documents:
- Introduction
presentation :
- User’s
guide :
If you have any comments and/or questions about the site's organization or its content don't hesitate to contact me by e-mail.
| This page was last modified by
VB on
July 29, 2005.This
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