MDT Guide for Experts

Useful phone numbers

How to start an MDT standalone run

Two partitions are available for standalone runs with MDT detectors: part_MDT and part_MDT2. The former is to be used for Barrel-only runs, while the latter is for Endcap-only runs. The current configuration of the LTP modules requires a single TTC partition, either MDTEndcapA-TTC or MDTBarrelA-TTC, to act as a MasterTrigger of the DAQ partition. Instructions for running an Endcap-only partition on a point1 machine:

muondaq@pc-atlas-cr-06> tcsh

muondaq@pc-atlas-cr-06> mdt2

muondaq@pc-atlas-cr-06> run

Common OKS operations

By-pass ROS and use TCP/IP data output

Two steps: change all Output fields of the RCD objects from EmulatedDataOut to TCPDataOut, then set the flag OutputToROS in MRODXParameters equal to false.

MDT Control Panel

The MDT Control Panel is a java application installed in the ~muondaq account in point1. It allows one to quickly check which chambers are included/excluded from the current MDT partition, and to add or remove chambers from it. The MDT Control Panel is activated as follows:

muondaq@pc-atlas-cr-06> tcsh

muondaq@pc-atlas-cr-06> MdtControlPanel

The command MdtControlPanel is a shorthand for:

muondaq@pc-atlas-cr-06> java -cp MdtControlPanel.jar MdtControlPanel

PS Mainframe Configuration

Whenever the configuration of DC/DC distributors in an EASY3000S crate is changed, it is necessary to update the firmware of the Caen SY1527 Universal Multichannel Power Supply System which manages the status of the MDT power supplies.

A new configuration file is to be produced with EASY Rack Builder, a Java application available at http://www.caen.it/nuclear/software_download.php. Registration is needed in orfer to download software packages. The new configuration file needs to be loaded in the mainframe as follows:

muondaq@pc-atlas-cr-06> telnet 10.145.48.242 1527

Username: xxxxx

Password: xxxxx

Utility System Upgrade Download image via TFTP

Utiliy System Upgrade Upgrade Running image

Frequently Encountered Errors

• Trigger rate of zero
  • Is an SLink to ROS down?

• TTC timeout errors MDT-EC-TTC CS::TimeoutIssue Timeout on transition CONFIGURE
  • Pattern generator for the LTP was at 2 Hz, but it can handle only one million patterns. As such LTP triggers with patterns can't go under 40 Hz.

• EB timeout errors MDT-EBController CS::TimeoutIssue Timeout on transition CONNECT
  • Check that there aren't EB segments included in segments and resources that don't in fact exist!
  • Check that the RCD data out is TCP and not emulated for EB running on pc-rpc-dcs-01
  • Check if the EBInputMemoryPool memory page size is wrong or if ROS objects are off under segments and resources.

• Data taking stops with invalid name error RootController mrs::InvalidParameter Invalid name for parameter USER_ID
  • In run parameter maximum number of events has been set to something. This number of events has been acquired

• CSM parity errors MDT-EC-RCD ROSException MROD-EC36-17 Input 2 EML1C09: 2 CSM link errors (Parity/LDOWN)14925 (sbc-mdt-rcc-ecc-03.cern.ch MDT-EC3-RCD MRODXModule-dev etc)
  • Check chamber initialization

• CMEM BPA MDT-EBController CS::ControllerIssue Child MDT-EB-RCD is in error state ERROR 0x70e0704 => minor: Error 4 in package 7 => CMEM_RCC library: error from call to ioctl function => error 14 in package in 7 => CMEM RCC library: error in the driver in call to BPA function
  • Change the EB segment: EBInputMemoryPool, change number of pages in page size

• Event counter stops upgrading after very few events, trigger rate zero
  • Check that the number of includes in the partition file matches the actual number of included files

Supplementary Gas Monitoring Guide

The following webpage provides additional information about the gas system. However, it is not available from the P1 internal network.

http://mpi.web.cern.ch/mpi/atlas_mdt_gas_system/instructions.html

-- AlbertoBelloni - 14 Feb 2008