Muon Piquet Training V.0

W Baldini, E.Furfaro, O. Maev

June 11-th 2015

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Intro - Disclaimer • This presentation is not intended to be a complete description of

the system but a guide, possibly simple, to the most-likely-used tools of the Muon System

• Most of You were Piquet during Run I, in this case this could be a refresher course.

• It’s of paramount importance that, for the first piquet shift, you foresee a week of overlapping with the previous piquet, doing things “hansd on” is much more efficient than any training

• Run just started, so there is not yet a list of “typical” problems, every day is a new day...

• Suggestions on how to improve the Piquet training are VERY welcome!

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Muon System DAQ in a Nutshell

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Each station M1-M5 is divided in four quadrant Q1-Q4, in clock-wise order looking the detector from behind.

Q1, Q2 on A-SideQ3, Q4 on C-Side

Interaction point

C side

A side

Q4

Q3

Q1

Q2

M2

M3

M4

M5

M1

Muon Numbering

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The Muon Detector DAQ and Control electronics chain

DIALOG is configured and read back by SB (Service Board). Service Boards are placed in an off detector rack. The same rack houses thePDM board (Pulse Distribution Module): it generates pulses in a chosen phase with the LHC machine clock for the time alignment of the muon system.

Front-end Boards (CARDIAC):2 ASIC-CARIOCA (ASD chip)-DIALOG (logic, timing and monitoring)

The IB (Intermediate Board) make logical combinations of the front-end channels (logical channels) where the combination is not possible at DIALOG level

The ODE (Off Detector Electronic Board)

receive signals from the FEBs (or IBs),

synchronize and displace them to the L0

trigger. Upon reception of a trigger signal data

are sent to the TELL1 board and from here to

the DAQ

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The ECS: Experimental Control System

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The Experimental Control System

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Status and Color codes

• Status of various parts is defined with colors

• The access/ownership of that part is shown with a lock, also with a color code

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ECS Steps

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The Muon ECS

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MUON Main Control Panel: Musides 1. How to open it: after logon to the ui (user interface) cluster:

– G:\online\ecs\Shortcuts311\MUON\MUSIDES\MUSIDES_UI_FSM (windows)– sh /group/online/ecs/..... MUSIDES_UI_FSM.sh (Linux)

2. From this panel You can reach all the controls and settings of the Muon System. The main “DOMAINS” are:

– DCS: LV, GAS, TEMP.– HV: CAEN, PNPI, GEM– DAI: Electronic Racks – DAQ: main control branch

• System Configuration• Data Flow

– Runinfo– HLT– Storage– Monitoring– TFC

Muo

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Muon Main ECS Structure

• DCS:– LV– GAS– TEMP

• High Voltage Oleg’s Talk• DAQ • Other stuff that usually doesn’t depend

from us. In case of real need You can refer to:

– Clara Gaspar: 160421 (almost everything!) – Markus Frank: 162100 (Monitoring) – Federico Alessio: 160935 (TFC)

We monitor it but is not under our direct control, Gas piquet: 162516

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DCS: Detector Control System

• The “Slow Control” system: allows You to manage mainly the powering of the apparatus through it’s Low Voltage system.

• It follows the general structure: Side -> Quadrant -> Station -> Hardware Type

• The controlled Hardware is: – ODE: you can control (e.g. switch ON/OFF) a FULL

CRATE of ODEs, for that specific detector zone – SB_PDM: Same as above for Service Boards and the

PDM board (are in the same crate) – FEE: You can switch ON/OFF the chambers of that

specific detector zone from here (all the FEBs)

ALWAYS THINK TWICE BEFORE SWITCHING OFF SOMETHING, it could just add more problems to the one you are trying to solve....

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DCS: Detector Control SystemLV to LHCb is generally provided through Wiener Marathon LV-PS: 12 channels output. Each of the panel below control 2 Marathons: one for the FEE and one for the Electronics (ODE, SB etc..)This is how the Marathon’s panel looks like for Q1M23 (for example).

Connection Status: if is not green it means that we cannot communicate with the PS. Check that the RCM (Remote Control Modules) in B1 are ON and the ethernet switch OK

Selector for FEE or ODE/SB/IB Marathon monitor

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DAQ: General structure

• The DAQ is the main part of the ECS, it allows You to configure, reset, check...the readout: ODE, FEBs, and configuration system: SB, ELMBs

• The hierarchy structure is as usual: • Side -> Quadrant -> Station -> Region -> HU (ODE) -> CMB • -> TELL1 (DAQL1)

• What a piquet is (usually) required to do is to check the status of the R/O, especially the configuration of the CMBs

• Through the hierarchy you can reach each panel of the ECS, but there are now “shortcuts” to reach the most useful panels:• Chamber monitor• SB/ELMBs monitor

• In the next slides we’ll see how to start them

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DAQ: The Chambers Monitor

• The fastest way to check at a glance the status of the FEBs is to use the Chamber Monitor Panel

• You can open it from the main DAQ panel (once you click, it takes a few seconds, please be patient...)

DAQ: The Chambers Monitor

• This panel is a very useful tool to monitor and act on the Chambers

3. Links to other panels

Right click button on the rectangles allows us to open the single chamber panel or the Servce Board panel

3. Links to other panels

4. The status tools

4. The status toolsChamber selection buttons

Tools buttons and the color code

4. The status tools

The warning icon

4. The status tools

It is shown in case of the result of the selected tool is not Green, Very Light Green,Light Green or Dark Green according to the tool color code

We can choose a tool by clicking on the radio box button: the corrispondig start/stop button will be coloured and the others are disabled.

The rate counters give us informations about the noise of the chamber

4. The status tools

The fix tool allows the user to set the threshold for one or more noisy chambers automatically

4. The status tools

This tool chek if the selected chamber are properly configured

4. The status tools

This tool chek if the selected chamber are the FEBs properly communicating

4. The status tools

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FEB communication status: MUST be all GREEN. If RED you will not be able to configure that FEB

Control cable: it controls the corresponding group of FEBS

The most important FEB parameter for the Piquet is the THRESHOLD: • It’s expressed in Register units (r.u)

corresponding to 2.35mV• its value can vary from 0 to 255 r.u.• values are very different for

different chamber types but if <55 or >110 is suspect... (very rough rule of thumb!)

The 2 most probable actions you’ll have to do (e.g. a noisy channel) are: • Count for 1 sec• set a different thresholdSee video

DAQ: The Single Chamber Panel

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DAQ: The Service Boards Monitor

• The fastest way to check at a glance the status of the SBs is to use the Service Boards Panel

• You can open it from the main DAQ panel

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SB Monitoring Panel

ELMB (4 per SB):• GREEN OK, communicating • YELLOW OK: pre-operational• GREY NOT OK, no

communication with chambers

The SB/ELMB is the hardware interface between DAQ and the Chambers for the CONFIGURATION only

The programs that manage the configuration data are called OPCs, now running on Credit Card PCs (CCPCs)

Usually if groups of ELMBs are not communicating the problem is in the OPCs... but also single ELMB can be not ok (see next slides)

SB Panel

LEFT Click

To (try) to recover the ELMB you can to power cycle the single ELMB by selecting it from the panel

How to Act on OPC servers • There is an OPC monitor panel in:

– G:\online\ecs\Shortcuts311\LHCb\LBECS\LBECSINFO_UI_FieldbusMonitor (windows)– sh /group/online/ecs/... /LBECSINFO_UI_Fieldbus Monitor.sh (Linux)

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MU

ON

OPC

s

RIGHT Click

OPCs NOT Running(to be restarted!)

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Present list of possible issues (and solutions)

• So far we had few systematic issues:

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Glossary: • ODE: is the Heart of the Muon DAQ, it collects data from the

detector and send them to the TELL1s and L0trigger. It consist of the Motherboard itself on which are mounted 24 SYNCs. See https://lbtwiki.cern.ch/bin/view/MUON/ODE and https://lbtwiki.cern.ch/bin/view/MUON/SYNC for more details.

• SB: Service Boards, its task is to provide communication with the FEBs. It is also made of a motherboard with 4 ELMBs mounted on it. See also: https://lbtwiki.cern.ch/bin/view/MUON/ServiceBoard and https://lbtwiki.cern.ch/bin/view/MUON/ELMB

SYNCs

ODE Board

Service Board

ELMB