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Research activities at ITA for future accelerator. M. C. Esteban. Outline. Introduction ILC:FTD detector Activities Projects & contributions SLHC: CMS Tracker upgrade detector Activities Projects & contributions SuperKEKB: DEPFETdetector Activities Projects & contributions

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outline
Outline
  • Introduction
  • ILC:FTD detector
    • Activities
    • Projects & contributions
  • SLHC: CMS Tracker upgrade detector
    • Activities
    • Projects & contributions
  • SuperKEKB: DEPFETdetector
    • Activities
    • Projects & contributions
  • ITA HEP group
introduction
Introduction

ITA has been working in HEP since 2008

  • Two main working areas:
    • Electromagnetic compatibility issues
      • EM noise characterization of new technologies for HEP
    • Power supply distribution systems
      • Several topologies has been studied
        • Serial powering & DC-DC powering (SLHC)
        • Power pulsing (ILC)
  • Both issues (EMC & PS) have been tackle at the same time to ensure the correct integration of electronics at system level
    • It will help to implement a robust system by design
introduction1
Introduction
  • Our work has been focused on three future accelerators:
    • ILC: Sub-detector FTD (ILD)
    • SLHC : Sub-detector Tracker upgrade (CMS upgrade)
    • SuperKEKB: Sub-detector DEPFET (Belle II)
ilc ftd detector
ILC: FTD detector
  • The mstrip-FTD system is a silicon strip tracker located in the innermost part of the tracker region of the ILD.
  • It constitutes of 10 disks.
ilc ftd detector1
ILC: FTD detector
  • Main working areas :

A. Power supply distribution design:

      • Power estimation

B. Analysis of power pulsing effects in the power supply distribution system:

      • Transients
      • EMI

The analysis of both powering aspects will define the optimal power supply topology

ilc ftd detector main power design parameters
ILC: FTD detector - Main Power design parameters

A. Power consumption :

  • The total number of strips is higher than a million
    • Non –uniform distribution
  • Total current consumption of FTD is around 650 A
    • Currents consumption of FTD per power group
ilc ftd detector main power design parameters1
ILC: FTD detector - Main Power design parameters

B. Analysis of power pulsing effects in the power supply distribution system:

  • The ILC accelerator has a duty cycle of 0.5%
    • 1 ms bunch train every 200ms
  • If the power demanded by the FEE is synchronized to the bunch train, it helps to save energy
    • Energy dissipated will be lower
  • However several important issues have to be considered during the design of the power system:
    • Transient phenomena
    • EMI phenomena
  • All these phenomena have an impact in the design of the power supply distribution system
    • Topology
    • Cooling and material budget
ilc ftd detector main power design parameters transients
ILC: FTD detector - Main Power design parameters Transients
  • Power consumption
    • 1 ms bunch train every 200ms
    • V= 1,25 V; I= 12 A

Voltage

  • Voltage compensation may be required
    • Cable resistance
  • Over-voltages and Voltage dips may be present
    • Cable inductance
ilc ftd detector main power design parameters emi
ILC: FTD detector - Main Power design parameters EMI
  • The synchronization of the FEE power operation with the bunch crossing introduces a current periodic signal with a spectra content in the power supply system.
  • The spectra content varies between few Hz up to several hundreds of kHz
  • LF- Problematic due near field : Magnetic field
    • Every 5 Hz a pulsing magnetic field higher than 0.2 A each
      • Itotal = 40 x 0.2 A = 8 A
    • It may cause mechanical problems
      • Vibrations – wire bounding degradation
ilc ftd detector power supply topology
ILC: FTD detector - Power supply topology
  • There are several topologies that may be implemented in the FTD.
    • DC-DC based power distribution
    • Local LV RAD-hard regulators
    • Remote power supply
  • Each of them has advantages and disadvantages
  • We consider DC-DC as the first option of analysis:
    • To absorb transients associate to power pulsing system.
      • Keep transients locally at FEE level.
      • Low currents before DC-DC due to converter ratio
        • Low transients
    • Synergy with SLHC and new DC-DC hard-rad design.
      • HF noise & Rad issues
ilc ftd detector projects contributions
ILC: FTD detector – Projects & Contributions
  • FTD detector studies since 2011
  • Projects
    • I+D en Detectores para Futuros Colisionadores: FPA2010-22163-C02-01 (Ip: I.Vila) 2011- 2013
      • Estudios de EMC en nuevos detectores
    • ITA HEP activities (2008-2011)
  • Contributions
    • Linear Collider Power Distribution and Pulsing workshop May 9 -10 in Paris (LAL Orsay).
      • “Powering requirements and constraints of the Mstrip-FTD detector”
        • Oral presentation
slhc cms tracker upgrade
SLHC: CMS Tracker upgrade

Upgrade / Future detectors

Today

  • New FEE requirements forces to install DC-DC converters close to FEE (inside sub-detector modules).
    • The high current demanded by each power channel
      • Low voltage : 2.5 V change to 1.1 V (Power is ≈ constant)
      • It is defined by chip technology (250nm → 130 nm)
  • However DC-DC converters are a very noise source
    • It is necessary minimize the noise coupling between FEE – DC-DC units
    • It is necessary to minimize the total noise inside sub-detector volume
  • A large R&D effort is planned and taking place to develop a DC-DC switching converter to operate under high magnetic field with low noise emissions inside tracker volume
    • However a EM noise studies at system level are required
slhc cms tracker upgrade1
SLHC: CMS Tracker upgrade
  • Main working areas:
    • Electromagnetic compatibility issues (EMC)
    • Grounding & shielding issues (G&S)
    • Power aspects (PS)
      • Serial & DC-DC converters evaluation
slhc cms tracker upgrade2
SLHC: CMS Tracker upgrade
  • Working line details
    • Study and analysis of noise generation and distribution at the system level and define critical points of the system integration strategy.
  • Power network impedance effects on noise emissions of DC-DC converters
  • Study of noise propagation effects in power network.
  • Noise immunity test in FEE prototypes.
    • Definition of FEE immunity levels
      • New and/or old FEE
  • Radiation effects on EM noise emissions of DC-DC converters
  • The main goal of these studies is to establish the EMC rules to be applied during the design and integration of the tracker sub-system up-grade.
    • Define a robust topology of Tracker upgrade system by design
slhc cms tracker upgrade emc characterization of fee
SLHC: CMS Tracker upgrade – EMC characterization of FEE

EMC characterization of FEE

Old Tracker

MEDIDAS

MATLAB

COMSOL

SIMULACION

slhc cms tracker upgrade pn impedance effects
SLHC: CMS Tracker upgrade – PN impedance effects

Power network impedance effects on noise emissions

The aim is to define and characterize the impedances connected to the DC-DC power converter

  • It defines the noise (conducted and radiated) levels emitted by the DC-DC power converters AT SYSTEM LEVEL
  • Characterization of the electromagnetic environment
    • Impedances ( FEE & Power Bus)
    • Multiple units
slide19
Introducción

SLHC: CMS Tracker upgrade – PN impedance effects

18

SIMULACION

MEDIDAS

MODELO REAL

slhc cms tracker upgrade project contributions
SLHC: CMS Tracker upgrade – Project & Contributions

SLCH detector upgrade studies since 2008

  • Projects
    • I+D en Detectores para Futuros Colisionadores: FPA2010-22163-C02-01 (Ip: I.Vila) 2011- 2013
    • EMC immunity studies for CMS tracker upgrade - CMS9.04: Ip (F.Arteche e I.Vila) – (2010-2012)
    • I+D en detectores y estudios fenomenológicos para el colisionador Lineal Internacional : FPA2007 – 66387 (Ip: I Vila) - (2007-2010)
    • ITA HEP activities (2008-2011)
slhc cms tracker upgrade project contributions1
SLHC: CMS Tracker upgrade – Project & Contributions
  • Conferences

TWEPP 2008, September, Naxos (Greece)

    • “Detector noise susceptibility issues for the future generation of High Energy Physics Experiments”.

TWEPP 2009, September, Paris (France)

    • “Interference coupling mechanisms in Silicon Strip Detector – FEE - CMS tracker “wings”: A learned lesson for SLHC”.
    • “DC-DC switching converter based power distribution vs Serial power distribution: EMC strategies for tracker upgrade

TWEPP 2010, September, Aachen (Alemania)

    • EMC studies for CMS tracker upgrade.Status & Plans
  • JCR paper
    • Global noise studies for CMS Tracker upgrade , Journal of Instrumentation Dec. 2010
  • Workshops
    • CMS power task force meetings
    • ATLAS & CMS upgrades meetings
    • Tracker upgrade meeting – Power group
superkekb depfet detector belle ii
SuperKEKB : DEPFET detector – Belle II
  • FEE (Sensor, DCD,DHP,DHH)
    • It may be sensitive to EM noise
    • It may radiates ( HF clocks and signals)
  • Power supplies
    • It emits EM noise
  • Cable & connectors
    • It may propagate EM noise inside/outside FEE area
superkekb depfet detector belle ii1
SuperKEKB : DEPFET detector – Belle II
  • Main working lines are:
    • To systematically approach the grounding design
    • To quantify the immunity /emission of the electronic systems.
  • The main goal is:
    • Conduct studies and measurements to establish a map of EM emissions and susceptibilities of sensitive electronics.
      • Safe DEPFET electronics integration.
  • This is the first time that this kind of mapping will be implemented in a pixel detector
    • Studies conducted previously in Trackers and calorimeters
superkekb depfet detector belle ii2
SuperKEKB : DEPFET detector – Belle II
  • Main activities:
    • Grounding and shielding strategy for DEPFET: Coordination & Policy
    • Immunity issues of DEPFET FEE: Susceptibility curves of DEPFET system.
    • Noise emissions of PS units: FEE noise immunity and PS noise emission coordination
    • Noise coupling path characterization between FEE and Power units: Noise propagation issues
superkekb depfet detector immunity issues of depfet system
SuperKEKB : DEPFET detector – Immunity issues of DEPFET System
  • The main goal of this activity is to define the susceptibility level of DEPFET FEE to
    • Radio frequency perturbation
    • Transient perturbation.
  • A set of test will be performed in an EMC unit
    • Immunity test to RF disturbances
    • Transients immunity test
superkekb depfet detector immunity issues of depfet system1
SuperKEKB : DEPFET detector – Immunity issues of DEPFET system
  • This EMC unit is defined by the minimum structure that may obtain good results to extrapolate results for the whole detector (same topology)

CMS HCAL:

1RBX (12 channels)

CMS Tracker: 1Petal (6000 channels)

…¿¿DEPFET ??...

1 Module /half ?

Power supply

DAQ system..

Test set –up preparation complex

superkekb depfet detector projects contributions
SuperKEKB : DEPFET detector–Projects & Contributions
  • DEPFET project since 2010
  • Projects
    • I+D en Detectores para Futuros Colisionadores: FPA2010-22163-C02-01 (Ip: I.Vila) 2011- 2013
    • EMC studies for DEPFET pixel detector, Research project – Max-Planck Institute & ITA (2011-2013)
    • ITA HEP activities (2008-2011)
  • Contributions
    • 4th International Workshop on DEPFET Detectors and Applications, Ringberg Castle ,- 2-5  May  2010
      • Grounding & Shielding: Main issues (Oral presentation)
    • 7th International Workshop on DEPFET Detectors and Applications, Ringberg Castle ,- 9-10  May  2011
      • EMC DEPFET Project: A general overview (Oral presentation)
ita hep group
ITA - HEP group
  • The HEP studies at ITA are carrying out by Electrical engineering group.
    • Electromagnetic compatibility characterization & electronics integration.
    • Developing new solutions to optimize the energy efficiency and performance of systems mixing new technologies.
  • Team coordinator:
    • Dr. Fernando Arteche
  • Close collaboration with other groups involved in HEP detectors designs
    • SPAIN
      • CNM & IFCA
    • Abroad
      • Max-Plank Institute, CERN, Aachen , FERMILAB & SLAC
ita hep group1
ITA - HEP group
  • EMC - Facilities
    • Faraday cage
    • One semi-anechoic chamber
    • Spectrum analyzers
    • Current probes & Antennas
    • Surge & Burst & ESD generators
    • Amplifiers (kHz-GHz)
  • Electronic Lab - Facilities
    • Boards designs
    • Power supplies
    • Programming controllers
  • Sofware
    • Pspice
    • Matlab
    • COMSOL
ita hep group2
ITA - HEP group

FUTURE …. New 10m Semi- Anechoic Chamber !!!!

(Inves. 1.5 M€- 2012) – APPROVED

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