CONTENTS

Introduction

Documentation

• User notes - important operating information
• Users manual
• Technical manual
• Specification (as used in the call for tender)
• Mechanical drawings
• IEEE mechanical specifications
• Access to the VME64x RJ0 connector
• Live insertion & extraction
• Custom backplanes
• Photographs
  • Prototypes
  • Production subracks
  • Remote power supply cable management
• Presentation of prototypes
• Conformity tests
  • Prototype
  • Production
  • ST-EL measurements
• Wiener Plug & Play

Procurement information

• Ordering procedure
• Prices and delivery schedule

OPC Server

Weight of crate components

Water connections

Support and maintenance

Radiation and magnetic field tolerant subracks

CERN PH-ESS Group is managing a common project for the supply of complete powered, cooled subracks for the four LHC experiments. Initial studies were followed by an invitation to tender to industry to supply subracks according to a joint specification which in turn led to a contract being placed with W-IE-NE-R, Plein Baus GmbH (Germany).

The subracks are all constructed to the IEEE1101.n mechanical specifications as used for VMEbus and Compact PCI, for modules in both 6U and 9U form-factors. VME64x backplanes and associated power supplies as well as integrated cooling are available as standard. Subracks may be equipped with rear "transition module" card-cages according to IEEE1101.11 (depth of module 220mm or 160mm in 9U subracks and 160mm in 6U subracks).

Many options are available in terms of power supply mounting position (i.e. locally or remotely with respect to the card-cage), as well as voltages, power ratings and cooling (by air or conduction via built-in water-cooled heat exchangers depending on the physical layout of the subrack).

Fan-trays are mechanically integral with the card-cage and contain the local and remote control electronics for the fan-tray itself and the power supply. Thus the subrack normally cannot be used without its fan-tray.

All crates are powered from a 92 to 264VAC, 47 to 63Hz (single-phase) supply and have high-performance power factor corrector circuits incorporated to reduce the rejection of harmonics onto the local supply to a minimum.

In all cases, remote control via CANbus (optionally other field buses) is available together with an OPC server.

This site contains both technical and procurement information which should enable a choice of subrack configuration to be made. However, since the number of options is large and there are in some cases complex issues of compatibility, the user is strongly advised to contact Paul Harwood for advice.

IMPORTANT NOTES:

Subracks will only be delivered to internal CERN locations, accessible to the CERN transport service, or alternatively may be collected in person. Onward shipping outside CERN must be organized by the user.

ESS do not hold spares for crates. Each experiment / user should evaluate their needs and ensure that spares are maintained as necessary. Consider common spares where possible.

The contract (B1186/EP "Subracks for LHC Experiments") with the supplier (Wiener) has been negotiated following a CERN invitation to tender. The contract stipulates that all orders will be placed by CERN PH-ESS who will provide the single point of contact with the supplier.

All orders from experiments must be accompanied by advance payments to cover the cost of the subracks and the transport to CERN (prices are ex-works). Note that the list price list is in Euros (EUR), but the 'User price' is in Swiss Francs (CHF), which includes shipping & miscellaneous costs.

The detailed ordering procedure is as follows:

1. Choose the subrack you need using the information given in this web page. Component items & prices may be found on the database LHC Crate Database, please contact Paul Harwood for advice or questions.
2. Once you have decided on the subrack's configuration, go to the order form select the required components. Add a separate line for each different configuration, or where items are to be on different budget codes or delivery locations.
3. You may edit this request at any time up until the order deadlines, at this time the request will be locked by PH-ESS.
4. You will be contacted by PH-ESS to confirm your request, and to discuss the configuration and preferences, if necessary.
5. Payment
   1. PH-ESS will establish a CERN internal money transfer ("TID") by CERN EDH from your code to ours. The total cost of your subracks can be shared between more than one budget code.
   2. The TID will be routed for signature by those responsible for the supplier budget code (PH-ESS) and the client code (yours). Once all has been signed and accepted by CERN Finance Division, your code will be debited and ours credited. At which time the order is firm.
   3. Important: It is the requesters responsibility to ensure that the funds are approved & transferred in a timely manner. If the transfer is delayed unduly ESS will not be able to order the items.
6. When delivered to CERN, your subrack will be given a short functional test by PH-ESS, after which you will be notified of its availability.