Mark Krasberg

1
SPS and The Test SystemsMark KrasbergDec 1,
2005
2
SPS
How does SPS interact with the test systems ?
PCTS
DFL
SPTS
SPLTS
Chamberlin Chest Freezer
MDFLs
3
SPS
The goal
MDFLs
DOM Production Testing
SPTS
SPLTS
Chamberlin Chest Freezer
DFL
PCTS
expires March 2008
expires March 2007
4
Chamberlin Chest Freezer

• Purpose
• DOMCAL development
• Flasherboard development
• Flasherboard testing
• Droop measurements
• PMT gain linearity measurements
• Hardware
• Two DOMs, PMT, pulser, DOMHub

5
SPLTS

• Purpose
• DAQ Software Development
• low level testing
• Hardware
• 60 warm mainboards, DOMhub, associated computers

6
SPTS Goals (London)
SPTS

• To emulate the pole using surface DAQ / DOMs
  /mainboards / DOMHub simulators
• To test/stress software prior to pole deployment
• To reproduce/debug pole problems

7
SPTS (London)
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Multi-pronged Approach (1) (London)

• Individual DOMs
• Test communications, firmware (MOAT, STF,
  flasherboard testing, DAQ and TestDAQ)
• Can use external LC trigger source to study
  single DOMs easily
• Multiple DOMs
• All of the above. Test LC triggering between
  DOMs.
• Test absolute timing using fast LED external
  light source
• Multiple DOMs on long quads of different lengths
• Test timing accuracy using external fast LED
  light source (optical fibers).
• Test Local Coincidence
• This represents a realistic InIceIceTop testing
  platform
• DOMs in freezer
• Test DOM performance at cold temperatures, like
  at pole
• Commercial Air quote is for 23k and will hold
  32 DOMs
• Freezer reduces noise rates to something similar
  to south pole
• DOMCal testing works much better at cold
  temperatures
• Supernova trigger could be much more
  realistically tested on SPTS with a freezer
• Temperature problems could be uncovered (FATs
  will use TestDAQ for the foreseeable future)

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Multi-pronged Approach (2) (London)

• S3 Simulated Stimulus Source (Kael) rack of
  mainboards with programmable FPGA signal
  generator to simulate entire strings
• Programmable external pulse injector to simulate
  both physics signals and PMT glass background,
  just like at pole.
• Will likely want to expand this to several
  strings next year since it should prove to be
  extremely useful
• S-Cube is being built, FPGA design has already
  been simulated and shown to work by Nobuyoshi
• DOMHub simulators
• Initially three servers to simulate 12 strings
• Using prerecorded data or physics simulations
• Eventually, want to simulate all 80 strings

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Cabling Plan (Jul 2005)

• 12 InIce DOMs, different quad lengths to simulate
  different depths
• 4 IceTop DOMs
• Switchable surface cable lengths, to simulate
  different holes
• All DOMs hooked up with realistic LC connections

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Cabling Plan Schematic (Jul 2005)
Filter Box
12
One Year Ago
SPS
10
90
PCTS
DFL
SPTS
SPLTS
Did not exist
Did not exist
Chamberlin Chest Freezer
MDFLs
Did not exist
13
Recently
SPS
10
45
45
PCTS
DFL
SPTS
SPLTS
Chamberlin Chest Freezer
MDFLs
14
In the near future
SPS
10
25
65
PCTS
DFL
SPTS
MDFLs
SPLTS
Chamberlin Chest Freezer
15
SPS
We are getting closer to the goal
We could have this by May 2006 if procurements
are made
SPTS
SPLTS
Chamberlin Chest Freezer
DFL
PCTS
expires March 2008
expires March 2007
16
How to accomplish the goal

• Hardware
• Remove dependency on a large freezer (DFL)
  Purchase a freezer for SPTS.
• Remove dependency on PCTS Purchase long quads
  for SPTS.
• Software
• Use SPTS as the gateway to check out all code
  before moving it to the pole.

17
SPTS Enhancements

• LED light source for time resolution, rate and
  LC tests being used
• DOMHub Simulators to simulate multiple strings
  these exists (unused so far)
• S-Cube to simulate pole trigger conditions,
  initially for most of one string in progress