Electronic Systems Support LHC Crates 2005 Paul Harwood PH Electronic Systems Support Group (PH-ESS) Meeting Sept 1, 2004

2 Sept ph VME crates Introduction LHC crates contract Supplier - Wiener (Plein & Baus) Gmbh Schedule - Single annual order, 3 fixed deliveries ESS handles – Contract, Ordering, Reception, Inspection, Inventory & database, Forwarding and Support deliveries Deliveries 1 & 2 complete (32+38 crates) Delivery 3 expected mid Nov (75 crates)

3 Sept ph VME crates Technical overview Crate configuration options 6U / 9U Local / Remote PSU Air / Water cooled Standard / Lab variant Backplane options – VME64x, VME64xP, CPCI, Custom, J3… Other – Fan tray depth, Slot depth, 6U/9U slot options Communication – CAN as standard, TCP/IP & RS232 Rad/Mag tolerant crates ’05

4 Sept ph VME crates Crate configurations 6URemoteLocal 9URemoteLocal

5 Sept ph VME crates Crate variations Initial plans were to provide a number of ‘standard’ crates There are now 31 different types of crates & 36 PSU configurations on the inventory For support & administrative reasons it is necessary that this list does not grow any more Review the pre-existing options, there is almost certainly a suitable solution Guidance can be provided of selection of the best solution

6 Sept ph VME crates Water-cooling (PSU’s) To date: Pre-production prototypes evaluated by ESS In collaboration with Wiener, several changes made to improve reliability & cooling efficiency A few intermediate delivered to users Have been recalled for the above modification Considerations Will require care with cooling water installation to achieve required flow rate (≈1 l/min) Power supply is ‘shunted’ by rack heat- exchangers

7 Sept ph VME crates Water cooling performance LHC w/c PSU – Cyan & dark violet curves. Note that the number of internal modules affects pressure / flow characteristic.

8 Sept ph VME crates Cable management In ‘remote’ PSU configurations, the loom of DC cables from the PSU to the crate required management, to ensure: Minimum length (dynamic load requirement) Full access to rear transition area Minimize conflict with experimental cables in the rack Ensure cables are undamaged by access operations All remote PSU ‘bins’ will now include cable management (next slide) Ensure that there are no conflicts with other services (water, experimental cables)

9 Sept ph VME crates Cable management

10 Sept ph VME crates Cooling A number of instances of Slot 1 (2,3,4) cooling problems have been seen. ESS\Wiener are investigating methods of mitigating this classic issue, including: airflow modification, assisted force cooling In the meantime… All crates are now supplied with Information sheets giving guidance on a few key aspects. All 9U crates supplied in 2005 onwards will have a blanking panel fitted to the J3 area, if there is nothing ordered in this position. Users may remove this if required to fit a J3 backplane. This should improve the overall airflow in the crate.

11 Sept ph VME crates Rad/Mag tolerant crates  Prototype – 9U, no fan tray, VME64x  PSU water cooled with remote AC/DC & control board 9U LHC Crate Variant 1 Water Cooled Power Supply 766mm 726mm 840mm 1U726mm 9U 690mm 6Ux160mm Board 6U SUBRACK POWER SUPPLY FAN TRAY J1 RP0 9Ux400mm Board J0 9Ux220mm Board J2 RP2 WATER COOLED POWER SUPPLY Power Connection AC/DC 6U Control in crate Mains Hostile Safe

12 Sept ph VME crates Questions? Any Technical Questions?

13 Sept ph VME crates Ordering for 2005 No major change from 2004 Costs Updated price list available from October Normal annual increase from Wiener PH-ESS will add a supplement to cover variations in the CHF/EUR exchange rate and transport (~2%) Discuss your requirements with Paul Harwood Technical Information: Delivery schedule (which batch?) Deliveries in 3 batches May, August and November 2005

14 Sept ph VME crates Ordering for 2005 Deliveries In 2003/4 a considerable number of crates have been forwarded outside CERN, with increasing volumes this will no longer be possible ESS will only now deliver by Internal Transport Users must arrange their own onward shipping if necessary Order amendments Several instances of order amendments have occurred in 2004 This is often expensive, and creates a large workload Please ensure crate orders are correct at the time of ordering Spares ESS do not hold spares for crates Each experiment / user should evaluate their needs and ensure that spares are maintained as necessary

15 Sept ph VME crates Timescales (deadlines) Requirements (Sept - Dec) Discussion of requirements / prices / delivery Internal orders confirmed (End of Dec) All requirements must be received by this date Prepayment (January) PH-ESS issue TIDs, which must be approved before order will be placed (by 31 st Jan) External order placed(Feb 1 st ) PH-ESS issues release order to supplier Deliveries 12, 24, 36 wks after release order

16 Sept ph VME crates Database ESS maintains a database of LHC crates Used for: Finding crate components / prices Order tracking & delivery information Inventory (bar code labels) & owner info Commercial & technical history Actions recorded: Order status, delivery date, warranty info, reception, testing, dispatch, fault records, repair…. Users may now access this database and select “LHC crates – Public” Database is password protected for commercial reasons, please apply to ESS for access

17 Sept ph VME crates Discussion Any Questions? Any other points to raise?