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CDF Silicon Workshop 200612
th M
ay 2
006
New BLM & New BLM & BLM BLM
electronicselectronicsJose E. Garcia, Jennifer Gimmell,
Ulrich Husemann
OutlineOutline
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 22
New BLM SystemNew BLM System• Motivation Motivation (why do we need an upgrade)
• Characteristics Characteristics (electronics, …) • Current StatusCurrent Status
• Installation plans Installation plans Commissioning Plans Commissioning Plans (software, firmware, ACNET interface)
SummarySummary
MotivationMotivation
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 33
• Tevatron project to improve ABORT system
Prevent against this
Long reaction time
MotivationMotivation
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 44
► CDF BLM Upgrade
Add more information to the old system which is working reliably
Use same well-understood type of detectors with enhanced capabilities (new electronics)
Maybe an intermediate step towards a diamond-based beam abort system
► Goals:
Shutdown: install new BLMs and all cablesinstall new BLMs and all cables
After shutdown: commissioning commissioning
System OverviewSystem Overview
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 55
• Integrate BLM current and digitize at Tevatron turn frequency (every Integrate BLM current and digitize at Tevatron turn frequency (every 21 21 s)s)
• Form three running sums for additional integration periodsForm three running sums for additional integration periods
Programmable time constantsProgrammable time constants
• One abort threshold per integration period of each channelOne abort threshold per integration period of each channel
• Possibility to change abort thresholds and masks in response to Possibility to change abort thresholds and masks in response to machine statusmachine status
Read-out using VME system and EthernetRead-out using VME system and Ethernet
VME CPU can be used for system computationsVME CPU can be used for system computations
System CharacteristicsSystem Characteristics
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 66
High Voltage Power Supply
BLM
VM
E /
AC
NE
T
Controller Card
Interface to VME crate
Timing Card
Synchronous integration clock digitizers
Abort Card
FPGA info from digitizers compared with abort masks and produce abort signals
Digitizer Card
4 Channels with integrator and ADC
FPGACompares readings and sums to programmed thresholds - i.e. 1ms, 10ms, 1s
BLM Electronics
BLM
BLM
BLM
Current StatusCurrent Status
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 77
• Picked up 5 new BLMs from Marv Olson of AD Instrumentation Department (4 to be installed, 1 spare)
• BLMs are tested by AD, gain: 10 C/Gy
• Old fixtures removed from collision hall
• New fixtures finished in April 2006: add-on to old fixtures
• Cables ready for the installation
BLM
BLMs
Installation PlansInstallation Plans
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 88
• Sharing crate with diamonds (first-floor counting room 1RR04D)
Richard Tesarek
Shutdown project
New Modules already requested
Installation of new BLM SystemInstallation of new BLM System BLMs and cables set-upBLMs and cables set-up
Commissioning PlansCommissioning Plans
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 99
• Initial phase of testing correct read-out – immediately after installation
• Check that the dose rate and integrated dose agree for old and new system.
• Set up the abort logic of the new system such that the limit is reached during a regular store. Check if the radiation levels for an abort agree – immediately after accelerator start-up
• Run the system with same limits and for an abort. Check if both systems have fired and compare their FIFO contents.
• Keep new BLM as back-up system up to reliability is completely proved – depending on how much chances do we have to test it
Before CommissioningBefore Commissioning
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 1010
ACNET Controls for BLMs
• Adapt actual settings in ACNET (E2 page) for new BLMs (next week)• Use similar set-up:
• Global reset• Current rate and integrated dose• FIFO controls
• Paul Derwent will help us in the integrationUse New Java Front-End
• Establish a integration of radiation (1 minute, full store) out of the built-in rolling sums
Some infrastructure is needed :
• Development of mechanisms for abort acknowledgment - equivalent to current Kludge card.
SummarySummary
J.E.Garcia – CDF Silicon Workshop – Santa BarbaraJ.E.Garcia – CDF Silicon Workshop – Santa Barbara 1111
We will have our slot in the following weeksWe will have our slot in the following weeks Material and BLMs are ready for installationMaterial and BLMs are ready for installation
CommissioningCommissioning Read-out system: VME modules and ACNET Read-out system: VME modules and ACNET controls will be set-up during next weekcontrols will be set-up during next week Prepare system for radiation level tests at the beam Prepare system for radiation level tests at the beam startupstartup New system working as backup for a test periodNew system working as backup for a test period
Unfortunately, I was not able to join you there. Finally after some troubles I have my visa.
Enjoy the weekend!!!Enjoy the weekend!!!
CDF Silicon Workshop 200612
th M
ay 2
006
Additional Additional SlidesSlides