Hall D Project Action Item Tracker |
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DRAFT November 20, 2007 DRAFT |
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Item |
System |
WBS |
Responsible |
Action Item |
Status/Response |
Target Date |
Close-out Date |
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Review |
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Aschenauer |
Hall D PID Review |
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2/18/2008 |
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Review |
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Aschenauer |
Hall D Tracking Review |
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3/31/2008 |
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Review |
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Aschenauer |
Hall D System Review |
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5/15/2008 |
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Review |
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DOE |
Lehman Review |
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6/1/2008 |
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Solenoid |
1.5.1 |
Biallas |
testing after fixes (single coil tests) |
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mapping of solenoid and impact on schedule / strategy for alignment |
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FDC |
1.5.2.1.1 |
Carman |
validation of current cathode design (decissions: photon conversion, hit and momentum resolution |
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10/1/2008 |
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develop decission criteria: photon conversion, hit and momentum resolution & other criteria |
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12/20/2007 |
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specify information and precision per cathode pulse output |
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analyse Hall-B cosmic data |
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12/20/2007 |
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alternative designs ---> wire chamber |
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10/1/2008 |
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cooling of front end cards (2W / card 24ch) |
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1/4/2008 |
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construct a full scale prototype |
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06/30/2007 |
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test front end boards on small prototype; get input on shaper specs. for FADC |
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< 12/17/2007 |
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100MHz FADC |
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01/30/2008 |
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preliminary design for the HVTB, STB |
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12/21/2007 |
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asic input needed |
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02/28/2008 |
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Insertion/alignment tolerances |
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1/3/2008 |
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alignment monitoring system for FDC/CDC |
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1/3/2007 |
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CDC |
1.5.2.1.2 |
Meyer |
dE/dx specifications |
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01/31/2008 |
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send all the equipment needed to do tests on the preamp board to CMU |
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11/30/2007 |
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time resolution requirements; specify information and precision per pulse output |
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12/20/2007 |
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test front end boards on prototype; get input on shaper specs. for FADC |
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< 12/17/2007 |
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electronics design and space required for feedthroughs and gas distribution |
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02/15/2008 |
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capacitive coupling scheme |
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02/28/2008 |
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Electronics heat load / cooling scheme; Fernado does some measurments on air cooling of a 24 ch card. |
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03/30/2008 |
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insertion / alignment tolerances (coupling between CDC & FDC) |
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1/3/2008 |
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Finalize straw tube config.; length of CDC vs number of FDC packages |
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1/3/2008 |
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final HV distribution board |
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01/31/2008 |
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final cable for fdc and cdc (perfomance on crosstalk, impetance , ...) |
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01/31/2008 |
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Start |
1.5.2.1.3 |
Boeglin? |
Decide on PMT's vs. SiPm's |
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3/1/2008 |
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revise geometry / segmentation for consistency with current cdc/target and anticipated rates. 40 segments? |
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Needs to be supported separately from the target if possible . |
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Keep PMT's away from He leaks. |
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Need at least 5mm clearance between Start counter and CDC straws (CDC straw ID is Currently 8.25 inch (21 cm)) |
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Light guides or fibers? |
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Using Blue scintillating plastic? |
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relative alignment between start counter and target? |
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Werner to write 1 page description for Doc DB on Start counter |
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Bcal |
1.5.2.2.1 |
Lolos |
Define installation procedure (in or out of magnet) |
want to do it outside, everything apart the outer LG |
12/1/2007 |
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how to prevent eddie currents flowing due solenoid quench |
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12/1/2007 |
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winston cone and LG design, how are they rapped; how are they glued to the LG's |
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12/1/2007 |
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how to get the Bcal into the magnet |
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12/1/2007 |
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Complete specification for fibers |
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11/30/2007 |
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Light collection in outer layers, location of light detectors |
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12/31/2007 |
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segmentation of outer bcal, planacons vs fine mesh pmts |
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Total length finalized |
390 cm |
11/2/2007 |
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what does BCal TOF do for us, proton id, do we need the high resolution tdcs 62ps vs 120ps |
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1/15/2008 |
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do we need CFDs or simple Discr.; layout of one channel |
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1/31/2008 |
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sampling fraction increase by hybrid module design; pre-radiator yes or no |
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1/15/2008 |
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what is the lower photon energy threshold using our new understanding on the light yield --> physics impact |
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SiPMT's heat load; peltiers yes or no for stabelizing temperature to 20^oC |
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1/30/2007 |
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all the issues to be resolved with the SiPMTs |
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calibration system impact on technical design |
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12/31/2007 |
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fabrication plan and QA plan |
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2/1/2008 |
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Fcal |
1.5.2.2.2 |
Zihlmann |
Find radiation hard blocks, how many tolerances. |
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1/30/2008 |
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accessability to front FCAL for curing include into design |
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design for light collection and readout |
cylinder glued on pmt, connected to lead glas by silicon cookie |
1/30/2008 |
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timing with FADC, fitting procedures; proof of principle |
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3/30/2008 |
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what timing resolution is needed |
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1/30/2008 |
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inventory of cables, blocks and PMTs |
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12/31/2008 |
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design for "cellular wall"; build a prototype to test temperatur and concept; decission for final design |
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3/30/2008 |
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Calibration scheme studies by Athens, laser on the sheet in front of Fcal |
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UPV |
1.5.2.2.3 |
Eugenio |
validation of current design |
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12/20/2007 |
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Location and shape; conceptual design |
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TOF |
1.5.2.3.1 |
Zihlmann |
settle goals for timing resolution; |
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1/31/2008 |
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shielding for individual PMTs. QA plan for quality of material |
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polishing, wraping, testing and quality plan |
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light guide vs no light guide |
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rate issues; inclusion of ToF in trigger track count; finer segmentation |
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electronic chain, which module |
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5/30/2008 |
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holding structure |
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4/30/2008 |
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calibration system following athens scheme with fibers |
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DAQ |
1.5.3.1 |
Wolin |
Event size |
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Online |
1.5.3.2 |
Wolin |
which software to use |
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Slow Controls |
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Wolin |
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Offline |
1.5.3.3 |
Lawrence |
is capacitive coupling assumed for cdc reconstruction |
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impact of length of cdc on pattern recognition |
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FADC |
1.5.4.1 |
Barbosa |
Finalize decisions on dynamic range and number of bits |
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specifications for sampling frequency and number of bits for 100 MHz flash. |
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TDC |
1.5.4.2 |
Barbosa |
review least count requirement, esp. for TOF |
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Trigger |
1.5.4.3 |
Doughty? |
clock distribution system definition |
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CFD/Splitter |
1.5.4.5 |
Alberta? |
what do we need/want CFDs vs Disc. Integrate splitters for Bcal. All in VME |
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Tagger |
1.5.5.1.1 |
? |
strategy for procurement (boundary between ped/construction) |
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Specification and SOW finalized |
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Hodoscope |
1.5.5.1.2 |
Jones/Klein |
do we want to do the design change proposed in June 07 |
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prototype for microscope to measure light yield |
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Target |
1.5.5.2 |
Seeley |
design for solid point target for commissioning |
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He from target danger for PMTs? |
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add 3 racks for target on cdc platform |
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can the H2 and D2 tanks be inside the hall --> safety? |
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how accurate do we need to know the target density; influence from magnet on density measurement; vaporpressure bulbs |
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how well has the target to be alligned in the magnet |
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cryogenic links between target and magnet; magnet in batch on continous filling mode ---> impact on target |
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do we need a 4cm diameter of the target |
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do we really want to use the 4K He from magnet to cool target |
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target will be operated subcool not a vapor pressure |
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Beamline |
1.5.5.3 |
Jones |
collimators movable |
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pair spectrometer design currently 0% |
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Radiator defined |
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Assembly |
1.5.6.1 |
Whitlatch |
BCAL assy technique |
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12/20/2007 |
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Installation |
1.5.6.2 |
Whitlatch |
BCAL insertion technique |
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12/20/2007 |
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Cryogenics |
1.5.6.3 |
Biallas |
Do the 3 coils at JLAB leak? |
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11/20/2007 |
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How do we repair coil #3? |
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Calibration and alignment |
1.5.2.1 |
Athens ? |
Tracking, Calorimetry, PID |
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1.5.2.2 |
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1.5.2.3 |
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RICH |
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all |
single or dual radiator, photon detector |
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DIRK |
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all |
do we want to leave space for a DIRK in the barrel |
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