Ilc beam instrumentation a short overview of fermilab r d activities
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ILC Beam Instrumentation – A Short Overview of Fermilab R&D Activities –. Manfred Wendt Fermilab, AD-Instrumentation. The International Linear Collider. ILC Beam Parameters (nominal):. ILC Beam Instrumentation. ~ 2000 Button/stripline BPM’s (10-30 / 0.5 µm resolution)

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Ilc beam instrumentation a short overview of fermilab r d activities

ILC Beam Instrumentation– A Short Overview of Fermilab R&D Activities –

Manfred Wendt

Fermilab, AD-Instrumentation

All Experiementers' Meeting


The international linear collider

The International Linear Collider

ILC Beam Parameters (nominal):

All Experiementers' Meeting


Ilc beam instrumentation

ILC Beam Instrumentation

  • ~ 2000 Button/stripline BPM’s (10-30 / 0.5 µm resolution)

  • ~ 1800 Cavity BPM’s (warm, 0.1-0.5 µm resolution)

  • 620 Cavity BPM’s (cold, part of the cryostat, ~ 1 µm)

  • 21 LASER Wirescanners (0.5-5 µm resolution)

  • 20 Wirescanners (traditional)

  • 15 Deflecting Mode Cavities (bunch lenght)

  • ~ 1600 BLM’s

  • Many other beam monitors, including toroids, beam phase monitors, wall current monitors, faraday cups, OTR & other screen monitors, sync light monitors, streak cameras, feedback systems, etc.

  • Read-out & control electronics for all beam monitors

All Experiementers' Meeting


Fnal ilc instrumentation r d

FNAL ILC Instrumentation R&D

ILC Instrumentation R&D activities at Fermilab include:

  • Design and development of beam- and non-beam instrumentation

    • A Cold CM-free L-Band cavity BPM for the cryomodule

    • Digitizer boards: general purpose VME and high-speed HA ATCA-style

    • Reuse, upgrade of A0-Photoinjector beam instrumentation, e.g. BPM pickups, screen monitors, interferometer-based monitors, etc.

    • RF-klystron interlock system

    • Non-beam cryomodule instrumentation: Faraday-cup & WPM read-out

      to support the on-site facilities:

    • SCRF test stands (HTS, CC2, etc.)

    • A0-Photoinjector (including some new beam-line instrumentation for emittance exchange experiment)

    • NML test accelerator (focus is on non-beam instrumentation for startup)

  • ILC R&D collaboration activities:

    • ATF Damping Ring BPM Upgrade collaboration (KEK/SLAC/FNAL)

    • HOM coupler signal study collaboration at FLASH/TTF (DESY/SLAC/FNAL)

    • Electro-optical sampling (EOS) bunch length measurement collaboration (ANL/NIU/FNAL)

    • Planned: EOM-based beam phase measurement collaboration (DESY/FNAL)

All Experiementers' Meeting


Nml beamline instrumentation

NML Beamline Instrumentation

beam

trans.

bunch compressor

capture cavities1 & 2

doublet

triplet

quads

dipole

doublet

RF-gun

3.9 Ghz cav

C

PS

O

F

O

O

O

O

S

B

T

Y

B

C

O

B

O

S

S

T

O

O

Y

O

S

O

S

T

S

Y

S

O

T

T

T

P

S

DRAFT

phase I

O

low energy

injector dump

ILC Module 1

doublet

doublet

dipole

beam-line for advanced beam instrumentation, e.g. EOS, Laser-wire, OTRI, cavity BPM’s,…

HOM couplers

O

S

S

T

B

S

O

S

O

high energy intensity dump

C

B

T

O

dog leg test beam-line (TBD)

S

Beam current / bunch charge (T:toroid)

Time-of-flight or beam phase monitor

Synchrotron light bunch length monitor

BPM (B:button, S:stripline, C:cavity, PS:perp. stripline)

Screen monitor (Y:YaG, O:OTR, C:CTR, S:slit, F:F-cup)

T

triplet

S

S

dipole

doublet

All Experiementers' Meeting


Cold l band cavity bpm r d

Cold L-Band Cavity BPM R&D

Goal: Development of acold CM-free L-Band cavity BPM with 1 µm single bunch resolution

All Experiementers' Meeting


Cavity bpm principle

Cavity BPM Principle

Problems with simple

“Pill-Box” Cavity BPM’s

  • TM010 monopole common mode (CM)

  • Cross-talk (xy-axes, polarization)

  • Transient response (single-bunch measurements)

  • Wake-potential (heat-load, BBU)

  • Cryogenic and cleanroom requirements

All Experiementers' Meeting


Cold cavity bpm prototyping

Cold Cavity BPM Prototyping

All Experiementers' Meeting


A0 photoinjection instrumentation

A0-Photoinjection Instrumentation

Button BPM

Toroid

Beam Phase Monitor

Screen Monitors

All Experiementers' Meeting


Vme atca digitizer r d

VME & ATCA Digitizer R&D

Generic and “fast” VME digitizer:

  • 5.5 / 50 MS/s sampling rate

  • 16 / 14 bit resolution

  • 12 / 8 ADC/DAC channels

  • 500k / 8M sample buffer per channel

  • FPGA programmable operation modes

    High-speed ATCA digitizer R&D:

  • 500 MS/s sampling rate

  • 12 bit resolution

  • 16 ADC/DAC channels

  • High-availability (HA) design

  • Analog front-end integration (rear transition module)

All Experiementers' Meeting


Rf klystron protection interlock

RF Klystron Protection Interlock

Forward power 200 kW, undersampled

Reflected power 200 kW

VME-based RF klystron protection interlock for klystron, waveguide and input coupler signals (fwd/refl-power, temperatures, PMT arc detection, etc.)

59.1 ns detection time!

All Experiementers' Meeting


Atf damping ring bpm upgrade

ATF Damping Ring BPM Upgrade

Upgraded BPMs

ATF DR BPM Upgrade Collaboration with help of the force of “Joda”Goal: 0.1 µm resolution to achieve < 2 pm vertical emittance in the ATF damping ringAchieved in March 07: 0.6 µm

All Experiementers' Meeting


Hom coupler signal studies

HOM Coupler Signal Studies

HOM Studies CollaborationBeam-based cavity alignment,HOM BPM system (~ 5 µm res.)

All Experiementers' Meeting


Eos bunch length measurement

EOS Bunch Length Measurement

Electro-optical sampling (EOS) by temporal decoding

EOM Studies Collaborationat the ANL Advanced Wakefield Accelerator (AWA)Goal: Bunch length measurement R&D

All Experiementers' Meeting


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