Mark Krasberg

1
SPS and The Test SystemsMark Krasbergwith a
lot of input/mods from Jim Haugen, John Cavin,
Albrecht, Kael, Andy L, Nobuyoshi, Perry, Jason,
Jacob Dec 13, 2005
2
SPS
How does SPS interact with the test systems
? What does the SPTS buildout to Final
Configuration look like? Why do it?
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
SPTS

• To emulate the pole using surface DAQ / DOMs
  /mainboards / DOMHub simulators
• To develop/test/stress/qualify software and
  firmware prior to pole deployment
• To reproduce/debug pole problems
• Train s/w deployers and users
• Staging area for IT support ( Darryn and co.)

7
What SPTS does not do. Or is not. (Haugen)
SPTS

• Perform design verification of cables,
  communication, SJB what else?
• Is not the cable test system (PCTS)
• Is not 100 mirror of SPS ( will not have 80 hubs
  for example, but could have enough DOMHub
  simulators to simulate 80 strings )
• Is not a DOM laboratory

8
SPTS (London)
9
Multi-pronged Approach (1) (from 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
  64 DOMs (one string)
• Or we could use chest freezers (idea is to
  eventually get the PCTS chest freezers) (Haugen
  Nov idea)
• 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)

10
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

11
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

12
Cabling Plan Schematic (Jul 2005 changed after
lengthy 12/2 meeting, see Perry config on slide
22)
Filter Box
13
One Year Ago
SPS
10
90
PCTS
DFL
SPTS
SPLTS
Did not exist
Did not exist
Chamberlin Chest Freezer
MDFLs
Did not exist
14
Recently
SPS
10
45
45
PCTS
DFL
SPTS
SPLTS
Chamberlin Chest Freezer
MDFLs
15
In the near future (reflects RealDAQ software
being used at Pole)
SPS
10
25
65
PCTS
DFL
SPTS
MDFLs
SPLTS
Chamberlin Chest Freezer
16
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
17
How to accomplish the goal

• Hardware
• Remove dependency on a large freezer (DFL)
  Purchase a freezer(s) 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.

18
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 being built

19
SPTS Buildout to Final Configuration (Jim Haugen
slide)

• Budget less than 100k (not counting data
  systems, eg domhub simulators), see next slide
• Timeline finish buildout by May, 2006 so it can
  be effective for 2006/2007 deployment season
• Labor needed Mark K, Nobuyoshi, Perry, Andy L,
  Jason K, Paul W, who else? Mark K leads buildout
• Final Hardware Configuration see Perry slide 22
• Organization see slide 21
• Layout at Chamberlin not done but lots of room

20
SPTS Buildout to Final Configuration -
(Haugen)

• Cables - 15k
• Connectors - 3k
• Seacon work - 3k
• Fiber system to freezer DOMs - 4k
• 2 chest freezers - 15k ( use extra chest
  freezers after PCTS shutdown if additional cold
  DOMs wanted ) alternative is to buy a custom
  freezer for 25k which would hold 60 DOMs if
  stacked like chest freezer idea
• S-cube - 10k
• Not including costs already spent DOMs,
  mainboards, DOMHubs, DOR cards, racks, servers,
  DOMHub simulators etc.
• No Labor yet
• Specialized test equipment ( 20k scope, etc. )

21
SPTS Buildout to Final Configuration Org chart
(Haugen)
22
Proposed SPTS Final Configuration Rev1 (Perry)
To be Purchased, Designed, and/or Built
Delay Spool Cage Unshielded Quads
DOMs in 2-3 Chest Freezers
In-Ice
Surface
250m
500m
500m
500m
500m
250m
114m
500m
HUB1
250m
500m
500m
500m
500m
500m
250m
182m
250m
500m
500m
500m
500m
500m
250m
250m
Filter
HUB2
Ice-Top
250m
500m
Filter
250m
500m
HUB3
Filters (16)
16 Short Quads Equal Length
64 DOM-MBs
Stimulus Simulator System S-Cube
64 Coax To MB-IN
TestDAQ String Proc.
Online PnF DS
String Emulation
PWS 12/05/05
23
Freezer

• Besides the quad cable purchase there is the
  freezer purchase. Options are
• No freezer this would not allow all software to
  be tested on SPTS
• Chest freezers buy two now and get rest from
  eventual decommissioning of PCTS Haugen prefers
  this idea I think.
• Custom freezer for the cost of three chest
  freezers we could build a custom freezer capable
  of holding many more DOMs (one string). Note that
  nothing needs to be placed on the roof we can
  use existing chilled water lines in Chamberlin
  (these are literally inches away from the
  proposed freezer location)