27 august 2003 - cp eptab5 1. electronic systems support eptab 5 27 august 2003 news &...
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Electronic Systems Support
EPTAB 527 August 2003
News & InformationChris Parkman
Catherine Moine
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Application dependent coherent sets
Working towards completing a set of modules in VME form-factor
Work on selector guides continuing http://ess.web.cern.ch/ESS/EquipmentSelectorGuide
/ Evaluating
CAEN V895 VME 16 Channel LeadingEdge Discriminator
16 input channels ECL outputs with fan-out of two Selectable Updating/Non Updating mode Programmable output width VETO and TEST inputs OR, CURRENT SUM and MAJORITY outputs
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A functional view of the readout electronics
Typical Read-Out
STANDARD MODULES
AND
CUSTOM MODULES
CUSTOM MODULES Discr.
High- Bandwidth
(> a few 100MHz)
DetectorAmplifier
Pulse
ShaperADC Memory
Computer
interfaceComputer
TDC
Trigger Logic
Creation of a database of the
existing circuits:
• Circuit specifications
• Availability
• Contact person
• etc.
Specificity increases, EPOOL role decreases
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Discussions with ISOLDE Exploratory talks
Equipment from Pool Waiting for input from ISOLDE
DAQ Asking for application support
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Database management Fully functional test version of
BAAN400 made available by AS Division
Discussion on web interface and connection to the Material Request procedure underway
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De-stocking List of non-functional equipment
for disposal ready for publication FASTBUS equipment
LEP crates, modules Do we need to advertise before
scrapping? Any possible use to HEP?
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C-RAMS testing CAEN V550, V551
“Readout for Analogue Multiplexed Signals”
2-channel 10 bit ADCs with sequencer Tests being in-sourced
Expensive and light-weight Pool status:
Rental: 31 CHF/month Total: 102 Used: 76
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New additions LeCroy LT354
“Waverunner-2” scopes 4 Channels 500 MHz Bandwidth 1 GS/s Single-Shot
Sampling Rate on all channels
50 GS/s Repetitive Sample Rate
Better than 10 ppm Timebase Accuracy with 5 ps resolution
Qty: 5 Pool status:
Rental: 176 CHF/month Total: 15 Used: 11
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Requests CMS
SBS618: PCI to VME optical link Only 4 in prospect for the Pool Not ordered
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Financial conditions Presented to EAB on 23 May Memo to Cashmore in preparation Simplified conditions for
Rental Compensation Resales
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Rental scheme – compromise proposal
Rental fee based on Average purchase price (VAM) Estimated useful lifetime Likely maintenance charges (guarantee period, repair contract) Likely usage
Costs monitored regularly Verification after rental Repairs
When costs exceed revenue - action! Full or partial renewal of stock
New equipment, new guarantee Equivalent function with lower maintenance costs
Modification of level of support Increase in rental fee Declassification
Rental fee may change – (annual review?) Excessive costs (increase) New purchases (VAM) (increase or decrease)
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Rental scheme – compromise proposal
Advantages Simplifies existing procedures
Based on support and utility to users Allows the revenue to cover real costs
Automatic regulation of overall rental Implies close monitoring of revenue
and costs Transparency
Via EPTAB/EAB
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Compensation - loss or major damage
Present system leads to anomalous (high) payments for old equipment
Age calculated from 1 Jan 1990…
Proposal Annual 10%
reduction of purchase price to a minimum of 10% after 10 years
Full purchase price for 1st year
0%
20%
40%
60%
80%
100%
120%
0 1 2 3 4 5 6 7 8 9 10 11 12
Age (years)
% p
urc
hase
pri
ce
2 year guarantee period
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Re-sales of surplus equipment
Present system applies the compensation value
Propose Fully tested in working condition
Compensation value Untested in uncertain condition
Case-by-case Market value