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Low Voltage Power Low Voltage Power Supplies for ALICESupplies for ALICE

TB 22.09.04TB 22.09.04L.JirdenL.Jirden

Target devices (reminder) Market Survey and Tender Actions

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Target devicesTarget devices Wiener

Marathon; compact version Marathon; split version

Caen SY1527 mainframe with LV modules Easy system Sasy system

Arem Pro

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Wiener MarathonWiener Marathon

UX

CR

PFCAC/DC

Digitalcontrol

Power modules

230 VAC

CANbus

Water cooling

Compact version:B-tol: 300 gaussRad tol: test planned

DC/DCAnalogcontrol

Power modules

230 VAC CANbus

PFCAC/DC

Digitalcontrol

380 VDC

B-shield

Split version:B-tol: 1200 gaussRad tolerant

Targeted by: TPC, TRD, MTK, MTG, etc

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Caen SY1527 systemCaen SY1527 system

SY1527main-frame

ethernet

B-tol: 50 gauss (?) – test requiredRad tol: ? – test required

LV modules

Targeted by: SSD

UX

5

UX

CR

Caen EASY systemCaen EASY system

no cooling

230 VAC

CANbus

Powersupply

48 VDC

DC/DC DC/DC DC/DC

Digitalcontrol

Digitalcontrol

Digitalcontrol

SY1527main-frame

ethernet

Branchcontroller

EASY B-tol: 1000 gauss

CRATE Rad tol – test planned

B-tol: 50 gauss (?) Rad tol: ?

Targeted by: T0, V0, etc

6

UX

Caen SASY systemCaen SASY system

no cooling

230 VAC

CANbus

Powersupply

48 VDC

DC/DC DC/DC DC/DC

Digitalcontrol

Digitalcontrol

Digitalcontrol

SY1527main-frame

ethernet

Branchcontroller

SASY B-tol: 5000 gauss

CRATE Rad tol: tested ok

B-tol: 50 gauss (?) – test!Rad tol: ? – test!

Targeted by: TOF

on detector

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UX

CR

Arem Pro PSArem Pro PS

230 VAC RS232

AC/DCpower

AC/DCpower

AC/DCpower

modulecontrol

modulecontrol

cratecontrol

ethernet

B-tol: ? – test plannedRad tol: tested, result?

no cooling

Targeted by: SDD

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Market survey & Market survey & TenderTender Market survey

sent July – answer deadline end August 21 answers 5 companies qualified

Tender planning Out by end September 04 Answers end November 04 Contract end January 05

Technical Specification Draft exist Environmental considerations; limits to be fixed;

Normal environment Low-level B-fields only Radiation effects only High-level B-field and radiation effects

Modularity: size of modules/channels to be specified ALICE needs spans from 3.6A (SSD) to 250A (TPC)

Controls requirements to be fixed Remote control of voltages? Remote power on/off? Performance

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ActionsActions

Finalize technical specification & launch tender – feedback from detectors needed

Tests of LVPS Wiener compact version for low level radiation - ESS Caen SY1527 for low level radiation and B-field – SSD Caen Sasy mainframe + 48V PS for low level

radiation and B-field - TOF Caen Easy crate for radiation and B-field - ESS Arem Pro for radiation and B-field - SDD