This is an example of a Technical Description for a Market Survey. It is based on the official LHC Market Survey Technical Description template. It includes hints and guidelines on how to prepare a Technical Description for a Market Survey. 

The example is meant as a guide to the contents of a Technical Description and as a reminder of the points to consider when preparing a Market Survey. The chapters proposed in the template should be amended to suit individual cases. 

The following conventions are used in this example: 

  • All the text in black is the text found in the Word template. This may need editing to obtain a complete Technical Description. 
  • The text in red is an example of what has to be added to complete a Technical Description. In the Word template these additions are indicated by XXXX.
  • The HELP are links to hints and guidelines to help the editor preparing the documents
The example is made up of 3 parts: the commented Technical Description, the help and guidelines , and some general recommendations. 
A more compact version is also available for printing. 

GO TO the commented  Technical DescriptionGO TO the help and guidelinesGO TO the general recommendations SEE other useful links

Group Code:   LHC-MMS/98-198/G09/fs    HELP  
EDMS No.:                    101615                               HELP
LHC Project document No.: LHC-Q-CS-0088.00 HELP  

The Large Hadron Collider Project                                                                                             MS-6677/LHC/LHC HELP

Market Survey

Technical Description for the
Industrial Control System for LHC Cryogenics


    This Technical Description concerns the supply of the hardware and the software for the cryogenic control system of the LHC. The LHC cryogenic system consists of eight refrigerators producing cold helium, a cryogenic distribution line (QRL) of some 27 km length and about 1800 superconducting magnets.

    This Market Survey will be followed by an Invitation to Tender in XXXX months and delivery is foreseen to be completed by XXXX.

    February 1999     HELP

    1.          INTRODUCTION

1.1        Introduction to CERN
                The European Organization for Nuclear Research (CERN) is an intergovernmental organization with 20 Member States*.  It has its seat in Geneva but straddles the Swiss-French border.  Its objective is to provide for collaboration among European States in the field of high energy particle physics research and to this end it designs, constructs and runs the necessary particle accelerators and the associated experimental areas.
    At present more than 5000 physicists from research institutes world-wide use the CERN installations for their experiments.
    1.2     Introduction to the LHC project

            The Large Hadron Collider (LHC) is the next accelerator being constructed on the CERN site.  The LHC machine will mainly accelerate and collide 7 TeV proton beams but also heavier ions up to lead.  It will be installed in the existing 27 km circumference tunnel, about 100 m underground, that previously housed the Large Electron Positron Collider (LEP).  The LHC design is based on superconducting twin-aperture magnets which operate in a superfluid helium bath at 1.9 K.

    1.3     Introduction to XXXX  HELP



            The aim of this Market Survey is to identify potential bidders for the supply of the hardware and the software for the cryogenics control system of LHC.

            Only firms retained by CERN after analysis of their reply to this Market Survey will be consulted for the forthcoming Invitation to Tender.

            The selection criteria under which firms will be assessed are defined in the document entitled "Qualification Criteria", and in the appended document "Selection and Adjudication Criteria for Supply (Service) Contracts".


    3.1         General
            Eight large cryogenic refrigerators (Figure 1) will produce refrigeration for the LHC ring. Each plant normally supplies a whole LHC machine sector of about 3.3 km length via a cryogenic distribution line (QRL), with interconnections at every basic machine cell length of 107 m. As shown in Figure 1 the cryogenic system is separated in four distinct entities. Each entity is made of the refrigerators interconected by the cryogenic interconnection box (QUI) both located at a LHC access point, and the distributed cryogenic load located inside the LHC tunnel. Per sector, this load is composed of the QRL, the magnet cells and two electrical feed boxes (DFB) controlling the cooling of the magnet current leads.

            For supervision and monitoring five local control rooms at Points 1.8, 2, 4, 6, 8 and a central control room will be available.


      Figure 1: General layout of LHC Cryogenics

      Table1 presents the number of channels and control loops for a 3.3 km sector. HELP TO INSERT TABLES

      Table 1 Channel repartition for the machine cells and distribution line

     3.2 Control architecture
    The proposed architecture shall consist of a three-layer control system as shown in Figure 3 composed of the:
      3.3 Technical requirements 3.3.1 Supervision layer The supervision system shall be implemented on a single type of platform operating under either UNIX or WINDOWS NT.

    Operators must be able to control the LHC cryogenic system from a local and/or the central control room in parallel with the same capabilities.

    The supervision system shall have at least the following features:

    The supply shall include the following:

    4.1 Hardware

            The control hardware for the entire LHC cryogenics control system in conformity with the proposed hierarchical architecture as defined in Section 3 of this document:

    4.2 Software

        The control software needed to operate the cryogenic system:

    4.3 Documentation

            In English or French :


            The Invitation to Tender is expected to be sent out to retained bidders in May 1999.

            The first control hardware is expected to be delivered to CERN by March 2000. The deliveries will continue until October 2004 concurrently with the cryogenic equipment delivery.

            The adapted software for the customized environment, if necessary, must be ready by December 1999. The first application software shall be delivered to CERN by March 2000 and then concurrently with the control hardware delivery.


        Persons to be contacted for technical matters:

        Persons to be contacted for commercial matters:


    A     List of Drawings  HELP

    Help and Instructions to Use the Template

    See the description of the styles and toolbar used in the template


    Group Code    BACK
    Insert the division or group document number according to the rules of  your division/group. It should at least be filled in with the division and group in the form LHC-MMS.  The initials of the author should also be added after the Group Code to enable easy identification.  For example:  LHC-MMS/98-198/G09/fs.  Use  Update Doc No on the toolbar to update this number.


    EDMS No    BACK
    A magic number for the EDMS system. It is filled by the Specification Committee secretariat. For details see "Three easy steps for the  submission of ...".Use  Update Doc No on the toolbar to update this number


    LHC Project document No    BACK
    This document number has the following structure:

    It should be completed in the following way:

    Use  Update Doc No on the toolbar to update this number throughout all the document (cover page and headers)


    MS Number       BACK
    The MS number has the following structure:

    It is given by the SPL Division when the Market Survey is registered with them.
    Use  Update Doc No on the toolbar to update this number throughout all the document (cover page and headers)


    Date     BACK
    Replace the month and year on the template by the current month and year .
    Use  Update Doc No on the toolbar to update this date on the cover page.


    Introduction to XXXX    BACK
    This is optional.  Add any additional information that you feel is necessary.  Be brief!


    Replace XXXX by the actual scope of this Market Survey. Complete and amend the text as necessary.
    Take care to alter the name of the document "Selection and Adjudication Criteria for Supply (Service) Contracts" so that it applies to your Market Survey.
    If applicable, state what equipment and/or services are supplied by CERN or a third party, i.e. what is NOT included in the supply.


     The structure of this chapter should be adapted to suit the particular Market Survey.


    How to Insert a Figure     BACK
    A short description of the procedure to insert illustrations is given below:.
    Inserting an illustration from a graphic application running on PC's (CorelDraw, designer, PaintShop...)
    1)    In the graphic application, select and copy the image (crtl-c)
    2)    In Word, place the cursor where the illustration should go, then Edit - Paste special - Picture, de-select Float over text, OK
    Inserting an illustration from a file accessible from the PC
    1)    In Word, place the cursor where the illustration should go, then Insert - Picture - From file, select the file - Insert
    Inserting an illustration which is part of an engineering drawing in CDD
    1)    See Saving part of a drawing into a new file  to prepare the file
    2)    In Word, place the cursor where the illustration should go, then Insert - Picture - From file, select the file - Insert

    How to Insert an Excel Table    BACK
    1)     In Excel, select and copy the cells (crtl-c)
    2)    In Word, place the cursor where the table should go, then Edit - Paste special - Picture, de-select Float over text, OK


    Describe all the items that will have to be supplied, including hardware, software, documentation, training manuals and so on.


    List all the technical annexes that are sent with the Market Survey, such as engineering drawings, specific procedures and so on.


    List of drawings     BACK
    It is recommended that the drawings are listed with their revision index to prevent confusion about which revision of the drawings is applicable.
    A list of drawings, including drawing number, revision index and title can be prepared automatically from CDD. See Preparing a list of drawings


    General Recommendations

    General BACK TO TOP

    In general, the firm "shall" , but CERN "will".  Try to avoid "should".

    Use of capital letters
    In both headings and text, capital letters are used for names of persons, organisations, documents, but not events, e.g. bidders' conference.
    Main headings (heading 1) are written completely with capitals. In all other headings (heading 2 to 4) only the first letter is capital.

    Glossary of standard terms (please follow convention for use of capitals)

    commercial documents (not tender documents)
    Tender Form or Price Enquiry Form
    Instructions to Bidders
    list of firms
    cover letter
    Contract (>750 kCHF)
    Order (<750 kCHF)
    Conforming Bid
    technical documents
    Market Survey
    Technical Description
    Qualification Criteria
    Technical Questionnaire
    Invitation to Tender (refers to the complete set of all documents sent to firms)
    Technical Specification
    Price Enquiry

    The following words take a capital in certain cases, i.e. bidder (for the Bidder use capital B, for a bidder or bidders in general use lower case b).
    contractor (not supplier or manufacturer)
    consortium (applied to any bidder who is a combination or joint venture of two or more firms acting as partners, but not sub-contractors)

    The main object of the specification should not have capitals in the text, but can be defined with a capital e.g. the instrumentation wires, hereafter referred to as the "Wires".

    For bullet lists there are two formats:


    Some things to remember to do when the Specification is ready:             BACK TO TOP

    Hints on the use of Word: Map of CERN site:
       To insert this map in a Word document do the following:

    Useful links   BACK TO TOP

    (Use the browser's Back button to come back here after visiting a link)

    Three easy steps for the submission of  LHC Market Surveys and Calls for Tender    (html)
    Styles to be used for the LHC Technical Specification     (html)
    Digest of ISO/IEC Directives Part 3 "Rules for the structure and drafting of International Standards"   (pdf)
    Abstract of the purchasing procedures    (html)
    List and Summaries of TIS Safety Documents” TIS/DI 97-46     (html)
    LHC Quality Assurance Plan documents    (html)
    Preparing a list of drawings    (html)
    Saving part of a drawing into a new file    (html)

    E. Bryant & M. Mottier        2000-12-04