CLIC Module Instrumentation
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CLIC Module Instrumentation
• Beam position monitors
• Baseline solutions
• Status
• Next phase of R&D
• Beam loss monitors
• Baseline solutions
• Next phase of R&D
• Module acquisition system
• Status
• Next phase of R&D
• Status and outlook
• Beam position monitors
• Baseline solutions
• Status
• Next phase of R&D
• Beam loss monitors
• Baseline solutions
• Next phase of R&D
• Module acquisition system
• Status
• Next phase of R&D
• Status and outlook
1CLIC Module Working Group 31/10/2011 Lars Søby
Beam Position Monitors - Baseline
High accuracy (5um) resolution (50nm) BPM in Main Linac and BDS
2CLIC Module Working Group 31/10/2011 Lars SøbyVery high numbers of BPMs for the DB decelerator, together with high accuracy
31/10/2011 Lars Søby CLIC Module Working Group 4
• WG-loaded, low-Q X-Band design (Fermilab-CERN-RHUL)– Qℓ ≈ 260, resonator material: 304 stainless steel
– CTF prototype includes a monopole mode reference cavity (same frequency)– ~50 nsec time resolution, <50 nm spatial resolution
• Calibration ports can be used for signal redundancy if required
Dipole-mode “BPM” resonator& waveguide
Monopole-mode “REF” resonator
Main Beam Cavity BPM, Baseline
With fiducial
31/10/2011 Lars Søby CLIC Module Working Group 5
Status on CLIC Cavity BPM
From Rogelio
• Two existing designs for CLIC and CTF3 (change in resonant frequency)• Prototype for CTF3 (15GHz) under fabrication : Metrology done (out of tolerance).
Need to find other manufacturer (RIAL) • Lab tests end 2011, followed by brazing and more tests…modifications…new prototype
Test foreseen end 2012 on Califes Beam line.• Fabrication of Mock-ups for Lab modules (T1, T4) will be launched mid 2012.• Integration into module done.
• CLIC cavity BPMs would have to be adapted to the change in beam pipe diameter in the BDS
Dipole cavity
31/10/2011 Lars Søby CLIC Module Working Group 6
Striplines BPM for the CLIC decelerator • High current 100A – high bunch frequency 12GHz• In the vicinity of an RF strucutre producing 100MW @12GHz• Temporal resolution of 10ns• 2 micron resolution over an aperture of 23mm (accurate calibration)• Transverse mode damped by SiC absorber
Diameter: 23 mm, Stripline length: 25 mm
Impedance: 50 Ohm
Drive Beam Decelerator BPM, Baseline
Simulations of transverse wakes
By Steve Smith
31/10/2011 Lars Søby CLIC Module Working Group 7
Status On Drive Beam BPM
Mock-up
• Mock-ups manufactured for the two T0 lab-modules. For Lab. T1, T4, four BPS manufactured by IFIC are at CERN.
• Prototype for lab tests being manufactured. • Lab tests end 2011, …modifications?…new proto type?.• Test foreseen end 2012 on TBL.• Integration into module done.
BPS
Plans CLIC BPM during the PPP
• Main Beam cavity BPM – design Collaboration with & • Simulation of wakefield and interference due to the presence of high field in the
accelerating structure. Choke mode BPM
• Demonstrate high resolution and high bandwidth• Prototype under-construction: Cavity BPM and its read-out electronic • Test at CTF3 in CLIC module in Two-beam Test stand• Demonstration of high spatial resolution @CTF3 and ATF2
• Evaluate the performance of the BPM during the temperature changes occurring the main tunnel during the operation of the CLIC (~20degrees)
• Drive Beam BPM – design Collaboration with
• Prototype(s) to be tested on the Test Beam Line at CTF3, and compared with inductive BPMs.
• Test of module acquisition system with BPMs developed by LAPP.
• Look for industrialization and cost optimization• Follow evaluate alternative designs like coaxial BPM designed by Igor.
8CLIC Module Working Group 31/10/2011 Lars Søby
Beam Loss Monitors : Baseline
9CLIC Module Working Group 31/10/2011 Lars Søby
• Two beam modules: 1 Ionisation chamber per Quadrupole
- 41484 Quadrupoles in DB
- 4020 Quadrupoles in MB
• Beam losses simulations using Monte-carlo code (FLUKA)• Establish limit for damage in rest of accelerator complex
- Destructive losses on the Drive Beam or the Main beam when 1% (1.5 1012 part.) or 0.03% (3.5 1010 part.) of a single bunch train hits a single aperture restriction.
• Development the detection system• Difficulty to identify the source of the loss in the CLIC modules (Drive beam or Main beam)
• DB
• Look for cheaper detector than Ionization chambers using Cerenkov fibers
Beam Loss Monitors : PPP
10CLIC Module Working Group
Drive Beam losses Main Beam losses
31/10/2011 Lars Søby
MB
Low energy
By, S.Mallows
• Study the loss pattern in the CLIC module and define the best detection system (FLUKA)• Design an test a system capable of identifying losses from Main and Drive beams
• Study and develop the Beam loss monitoring system for Damping ring
Plans for BLM Studies during the PPP
11CLIC Module Working Group 31/10/2011 Lars Søby
By E.B.Holzer, J.van Hoorne, S.Mallows
CLIC Module Working Group 12
Since 2008 we work on the CLIC module acquisition in collaboration with CERN (Lars Soby).
→ about 200 signals to be acquired every 2m for the 7 sub-systems.
Most versatile solution: industrial crate with
• 1 service board: autonomous 12VDC power supplies performed from 230VAC line,
network access and distribution on back-plane.• Several standard instrumentation boards: simple architecture based on FPGA and
mezzanines: different mezzanines developed for the different subsystems with a standard interface (FPGA high speed connectors).
General specifications of a local acquisition system
31/10/2011 Lars Søby
By S. Vilalte
13
Possible global architecture
CLIC Module Working Group
Crate 1
Crate 3
Crate 2
Crate 4
Crate n
PCIe 1 PCIe n
GBT links
Surface
Device 1
PCIe 2
Device n
230VAC line
NETWORK
Tunnel
Possible timings
31/10/2011 Lars Søby
By S. Vilalte
14
Mezzanine developments
Results:
ADC: SNR=72dB, SINAD=71,2 so 11,5 enob @100Msps.Amplifier OK.HSMC connector OK.Jitter cleaning and channels synchronization OK.
CLIC Module Working Group 31/10/2011 Lars Søby
By S. Vilalte
Mother board
Mezzanine
15
Results:
All links tested up to 8,5Gbps.ADC synchronization tested with success.Works well currently with USB, PCIe IP to be implemented (end 2011).
Surface data recovering-PCIe
CLIC Module Working Group 31/10/2011 Lars Søby
By S. Vilalte
Should be ready for beam tests end 2012
CLIC Module Working Group 16
Status and outlook
31/10/2011 Lars Søby
Mock-ups for lab test modules ready for the DB, but not for MB on T1 and T4.
Proto types of both DB and MB BPMs ordered, and electrical tests in laboratory for both BPMs by end of 2011.
BPM development is ongoing in collaboration with Fermilab, RHUL (MB BPM) and IFIC (DB BPM)
No BPMs ordered for CLEX modules, but believe should be OK for end 2012.
BLM development has really started and is evolving fast.
Development of module acquisition system well advance and should be ready for beam tests end 2012, but still no space foreseen in CLIC tunnel!!