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Low Voltage Power Low Voltage Power Supplies for ALICESupplies for ALICE
ALICE week June 04ALICE week June 04L.JirdenL.Jirden
Detector requirements Target Devices Procurement Actions
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Detector Detector requirementsrequirements
Quantities ALICE total ~160 LVPS crates and ~2000 PS
channels
Draft technical specification (Spec) Electrical characteristics Mechanical characteristics Monitoring and control Cooling Environment Standard chapters on:
construction, safety, reliability, quality assurance, documentation
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Spec:Spec:Electrical Electrical
CharacteristicsCharacteristics DC Output
Modular design; 2 – 7 V, 4 – 250 A modules
LVPS 2 – 7 V, 4A
LVPS 2 – 7 V, 250A
24h stability < 5mV or 0.1%
6m stability < 20mV or 0.5%
Noise & ripple < 10mV p to p
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Spec:Spec:Mechanical Mechanical
CharacteristicsCharacteristicsTYPICAL RACK LAYOUT
4U
1U
max 6U
1U
max 6U
VENTILATOR & CONTR.
HEAT EXCHANGER
LV PS
LV PS
HEAT EXCHANGER
LV PS
FRONT VIEW
LV PS
LV PS
SPACE
FOR
CABLES
600 mm300 mm
SIDE VIEW
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Spec:Spec:Monitoring & ControlMonitoring & Control
LVPS 1LOCAL PANEL
Ethernet
CANbus
Provided by manufacturer
External interlock
OPC Server
PC
OPC Server
PC
PCI “Kvaser”
Two options:a) Via CANbus b) Via Ethernet
LVPS 1LOCAL PANEL
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Spec: MONITORING AND Spec: MONITORING AND CONTROL FUNCTIONSCONTROL FUNCTIONS
VOLTAGES MON CON Individual channels ESS
CURRENTS MON 12 bit resolution ESS
RAMPING RATE MON CON Individual channels DES
TEMPERATURE MON Sensor above power circuits
ESS
OVER-CURRENT TRIP OFF VALUE
MON CON Individual channels ESS
FAN STATUS MON Out of limit warning ESS
OVER-VOLTAGE STATUS MON Individual channels DES
OVER-CURRENT STATUS MON Individual channels ESS
OVER-TEMP MON Out of limit warning ESS
MON = MONITOR
CON = CONTROL
ESS = ESSENTIAL
DES = DESIREDFUNCTIONS/PARAM
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Spec: MONITORING AND Spec: MONITORING AND CONTROL FUNCTIONSCONTROL FUNCTIONS
DC TRIP OFF MON Individual channelsGlobal DC power
ESSESS
RESET DC TRIP OFF CON Individual channelsGlobal DC power
ESSESS
DC POWER ON/OFF MON CON Individual channelsGlobal DC power
ESSESS
AC POWER ON/OFF MON CON using external power DES
PS HEALTH MON Summary status DES
LOCAL CONTROL MON Remote control locked out ESS
PS RESET CON System reset (tbs)?? ESS
MON = MONITOR
CON = CONTROL
ESS = ESSENTIAL
DES = DESIREDFUNCTIONS/PARAM
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VOLTAGES CON Groups of channels DES
DC POWER ON/OFF CON Groups of channels DES
RAMPING RATE MON CON Groups of channels DES
OVER-CURRENT TRIP OFF VALUE
MON CON Groups of channels ESS
MON = MONITOR
CON = CONTROL
ESS = ESSENTIAL
DES = DESIREDFUNCTIONS/PARAM
GROUP MANAGEMENT:THE POSSIBILITY TO CONFIGURE AND PERFORM FUNCTIONS ON GROUPS OF CHANNELS WITHIN A CRATE
Spec: MONITORING Spec: MONITORING AND CONTROL AND CONTROL
FUNCTIONSFUNCTIONS
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Spec: OPC SERVERSpec: OPC SERVER
General Compliance with OPC standards No effect on PS output due to failure of remote
control Restart of OPC remotely Not send set points automatically at startup –
read from device PS shall maintain its set points during PS
power failure Genuine device and cache access Interactive list of device functions
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Maintenance To support future versions of Windows and
OPC standards To support future versions of PS firmware
Configuration Allow appropriate management of the fieldbus Human readable configuration file (such as
XML) Obtain actual configuration by scanning Setting of ranges for analog values and setting
of the dead band
Spec: OPC SERVERSpec: OPC SERVER
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Performance Change in Device to OPC:max 10 sec at full bus load
max 1 sec for a single PS
Device cache to OPC client: max 3 sec for all parameters
Write from OPC to device: max 1 sec Interlock to start ramp-down: max 5 ms
Spec: OPC SERVERSpec: OPC SERVER
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Spec: cooling, etc.Spec: cooling, etc.
Cooling Use of standard ventilators not possible due to stray magnetic
fields Water cooling recommended Installed in rack with assured vertical airflow removing max
3kW/rack Environment
Radiation Total dose: 10 mGy Fluency: 109 n/cm2
Magnetic Field up to 200 Gauss Construction
Halogen free material Safety regulations
CE certification Reliability
MTBF > 90 000 hours (excluding ventilators)
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Spec: QA, Spec: QA, documentationdocumentation
Quality assurance Production tests
Functional tests Load tests
Documentation User’s guide Reference manual Test and calibration reports
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Target devicesTarget devices Wiener
PL500 F8: product exists; water cooling; some control limitations
PL500 F12: prototype exists; might not be commercialized
Marathon: Prototype exists; should replace F8, F12
Caen SY1527: product exist; no water cooling Easy prototype exist; B-field tolerant Sasy prototype exist; high B-field tolerant
Arem Pro Device H/W prototype exists; no water cooling
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LVPS overview ILVPS overview IDetecto
rPS
chan [no]
Target device Module [A]
Crates [no]
When require
d
Common purchase
SPD 20 Wiener PL500 F8 50 4 4Q05 Yes?
or 240 Caen Easy 9 4
SDD 216 Arem Pro 6 6 4Q05 ?
SSD 448 Caen SY1527 or 3.6 5 ? ?
or Arem Pro
TPC 72 Wiener PL500 F8 115 22 4Q05 yes
or 72 Wiener Marathon 50 22
TRD 180 Wiener PL500 F8 115 45 3Q05 yes
TOF ? Caen Sasy ? ? ? no
HMPID 100 Wiener PL500 F8 30 14 3Q05 Yes, commit before 05
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LVPS overview IILVPS overview IIDetecto
rPS
chan [no]
Target device Module [A]
Crates [no]
When require
d
Common purchase
PHOS &CPV
11 Wiener PL500 F8 20 - 115
5 ? yes
FMD ? ? ? ? ? ?
T0 4 Caen Easy ? 1 ? yes
V0 ? Caen Easy ? 1 ? ?
PMD ? Wiener PL500 F8 ? ? ? yes
ZDC ? ? ? ? ? ?
MTK 364 Wiener PL500 F12 25 31 2Q05 yes
MTG 16 Wiener PL500 F8 115 2 4Q04 yes
TOTAL 1461 + ?
3 manufacturers -7 types
3.6 - 250
136 + ?
4Q04- 4Q05
9 yes; 5 ?; 1 no
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ProcurementProcurement
Individual: TOF Handled by the detector – non-CERN purchasing Recommended to use the common technical
specification – at least for the remote control Common: SPD, TPC, TRD, HMPID PMD, PHOS & CPV,
T0, MTK, MTG Handled by ESS group – CERN tendering No FI committee required Market Survey out end June Tender out early September Close mid October Small quantities mid November to end 04
Not decided or no answer: SDD, SSD, FMD, V0, ZDC
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Action summaryAction summary
Send out market survey PH/ESS group by end June 04
Finalize the requirements Electrical characteristics, granularity of control
(size and amount of modules), control functions: detectors before mid August 04
Radiation policy: TC mid August 04
Issue the tender Merge ALICE requirements with other experiments
and send out tender TC + ESS group early September