ATLAS SCT

Service Mapping


This is a collection of source documents concerned with service mapping in the SCT originally gathered for the PP3 power supply cable mapping exercise. No guarantees as to completeness, currency or accuracy. Any updates, additions or corrections gratefully received.

Where files are on EDMS or CDD then EDMS or CDD should be used as primary sources for any engineering decisions. The versions here are provided for convenience, particularly of drawimgs which may not be radily visualised from HPGL.


ATL-IC-EP-0013 XLS ID Global Services Inventory spreadsheet. This file changes rapidly so the original on EDMS should be consulted.
The columns regarding phi sector and service gaps can be understood with reference to the following drawings.
ATLICSIC0002-vAB HPGL (.PLT) PDF Drawing of services envelopes, giving global orientation definitions
ATLICS__0058-vAC HPGL (.PLT) PDF Drawing of SCT service phi sectors for both Barrel and Endcaps; view from end A (at -Z looking towards +Z)
ATLICS__0059-vAB HPGL (.PLT) PDF Drawing of SCT service phi sectors for both Barrel and Endcaps; view from end C (at +Z looking towards -Z)
1-TB-0049-722-00-C HPGL (.PLT) PDF Drawing by Andy Nichols showing Barrel harness naming convention and cooling loop locations
Staves are numbered 1 to 32(B3), 40 (B4), 48 (B5), or 56 (B6), all starting at phi=0
Cooling loops are in groups of four staves, starting at stave 1 on all four barrels.
No cooling loop crosses the horizontal XZ plane.
ATL-? DOC   PDF Document from Andy Nichols defining mapping of Barrel modules to PPB1. These can be mapped to LAr gaps and/or ID service sector names using the phi angles shown in drawing 1-TB-0049-722-00-C, as detailed in PP3_routing_table below.
Note: in this document "module" should be understand to refer to "harness position". The physical module is connected to the harness offset by one position; furthermore, the module numbering scheme starts from 0 at the first module after phi=0. Therefore, for barrel 6 as an example, harness 1 connects to module row 55, harness 2 connects to module row 0, harness 3 connects to module row 1, etc. Furthermore, the cooling pipes are connected to the module rows in the same phi position, but are numbered from 1 instead of 0. Therefore, for any barrel, module 0 lies on cooling pipe 1, module 1 on cooling pipe 2 etc.
ATL-IS-EN-0021 DOC   PDF   Endcap Services Numbering. Detailed document defining service naming conventions for the endcaps.
Note that the Endcap quadrants are identified as Top Right (TR), Top Left (TL), Bottom Right (BR), and Bottom Left (BL) as viewed from the interaction point . They therefore have a left/right inversion between the two endcaps A or C as viewed from one end.
This document defines PPF1 to LAr gap mapping as used in the ID services inventory.
ATL-IS-EN-0024 XLS Endcap Modules to PPF1 Mapping. When combined with ATL-IS-EN-0021 there is a complete definition of modules to LAr gap.



PP3 Routing Table XLS G.Moorhead: PP3 Routing Table Version 6 (23 Nov 2004) . This spreadsheet gives a proposed mapping of cables from the LAr gaps through PP3 to the power supply crates. It allocates the large bundles of Type III cables originating in the PP1 patch panels to PP3's following the specification of Sergei Malyukov, and re-groups these into smaller bundles of Type IV cables for more convenient routing to correct power supply crates.



ATL-DAQ-99-014 PS ATLAS DAQ Note 14: Detector Readout Link Mapping Study. This note gives some ideas for Module to ROD and ROB mapping. The SCT section is not definitive. It discusses the necessity to connect SCT modules to RODs in groups of 12 because of our use of MT12 clock and control fibres. For the Barrel this means the minimum unit of connection is two adjacent half-staves. It also discusses the occupancy and trigger arguments for different possible arrangements.
ATL-? PS John Hill: Possible module to ROD mapping, October 1999.
ATL-? PDF J.Troska: Fibre routing for SCT Optical Links
ATL-IS-EN-0022_v21 PDF Richard Brenner: SCT mapping. An attempt to summarise mapping as understood in March 2003.
ATL-IS-EN-0042 PDF Richard Brenner: Structure of the SCT DCS
ATL-IS-EN-0067_v6 PDF Richard Brenner: The SCT Power Supply Interlock.