Difference between revisions of "Task-List-main"
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| Line 36: | Line 36: | ||
* DVCS? | * DVCS? | ||
| − | + | ===Geometry, Next iteration.=== | |
| + | <<Complete by April 6>>. | ||
* realistic gaps around dump shield | * realistic gaps around dump shield | ||
* target chamber | * target chamber | ||
| Line 43: | Line 44: | ||
* modified SAM design? | * modified SAM design? | ||
| − | + | ===Magnetic Shielding=== | |
* Evaluate B-field in Q1 beampipe with only one Q1 energized | * Evaluate B-field in Q1 beampipe with only one Q1 energized | ||
* Evaluate the Tritium-Magnetic-shield design | * Evaluate the Tritium-Magnetic-shield design | ||
* Evaluate mag shield additions for upstream/downstream septum beampipe | * Evaluate mag shield additions for upstream/downstream septum beampipe | ||
| − | + | ===O-Ring damage=== | |
* Plots: | * Plots: | ||
** E-weighted, electron only plots from beamline det an o-ring det | ** E-weighted, electron only plots from beamline det an o-ring det | ||
| Line 70: | Line 71: | ||
** CREX | ** CREX | ||
| − | + | ===SAM redesign=== | |
* calculate rates vs angle | * calculate rates vs angle | ||
* calculate doses vs angles | * calculate doses vs angles | ||
| Line 76: | Line 77: | ||
* Attempt final design | * Attempt final design | ||
| − | + | ===Activation Estimation=== | |
* Downstream septum beampipe flange, contact dose | * Downstream septum beampipe flange, contact dose | ||
* Downstream septum beampipe flange, whole body dose | * Downstream septum beampipe flange, whole body dose | ||
| Line 83: | Line 84: | ||
* DUST ACTIVATION? | * DUST ACTIVATION? | ||
| − | + | ===HDPE parameters=== | |
* Total / peak radiation dose. Damage? | * Total / peak radiation dose. Damage? | ||
* spec non-flamable HDPE, or devise fireproofing | * spec non-flamable HDPE, or devise fireproofing | ||
| − | + | ===Thermal Neutrons:=== | |
* count thermal/near thermal (<1eV rate), assume 8MeV / n energy release, compare to E&M power | * count thermal/near thermal (<1eV rate), assume 8MeV / n energy release, compare to E&M power | ||
* plot sources of thermal neutrons in hall, using hall-lid and HRS-platform detectors | * plot sources of thermal neutrons in hall, using hall-lid and HRS-platform detectors | ||
| Line 104: | Line 105: | ||
== Detector Stack == | == Detector Stack == | ||
| − | + | ===GEMs=== | |
| − | + | ===Integrating Detectors=== | |
| − | + | ===Detector Mounting Hardware=== | |
== Polarized Source == | == Polarized Source == | ||
| Line 114: | Line 115: | ||
== Documentation == | == Documentation == | ||
| − | + | ===Formal=== | |
| − | + | ===Collaboration=== | |
Revision as of 05:50, 7 March 2018
Task List, Preparing for 2018 Run
Design and Simulation
Base design, v3 Benchmarks.
<<Complete by March 16>>
- Need new benchmarks (accounting for updated geometry (dump, HRS) and SAMS
- for PREX-I, HAPPEX-II, PREX-2, CREX (and others?)
- on HRS detectors, under HRS detectors, Hall Lid or Hall Wall total ("whole hall"), and Hall Lid skyshine estimates
- prex2-v3:
- prex-2 dump, with shield
- no SAMS, or alternative SAMs?
- crex2-v3:
- (same with 48Ca target and 2.1 GeV)
- prex1-"??name??"
- PREX-I collimator
- PREX-I chamber? (not as important)
- PREX-I dump (with KW correction)
- no HDPE, no SkyshineShield
- Full size HRS det and structure, match prex2
- FULL PREX-I SAMS
- HAPPEX-II - ??name??
- HAPPEX-II collimator (same as PREX-I?)
- PREX-I dump (with KW correction)
- 3.2 GeV, 20cm LH2
- PREX-I chamber (not as important)
- no HDPE, no SkyshineShield
- Full size HRS det and strucutre, match prex2 sim
- FULL PREX-I SAMS
- PV-DIS?
- HAPPEX-3?
- TRITIUM (11 GeV)?
- DVCS?
Geometry, Next iteration.
<<Complete by April 6>>.
- realistic gaps around dump shield
- target chamber
- collimator chamber to match design
- HDPE around target to match design
- modified SAM design?
Magnetic Shielding
- Evaluate B-field in Q1 beampipe with only one Q1 energized
- Evaluate the Tritium-Magnetic-shield design
- Evaluate mag shield additions for upstream/downstream septum beampipe
O-Ring damage
- Plots:
- E-weighted, electron only plots from beamline det an o-ring det
- tables to arrive at integrated grays
- hall-lid det x0/y0 plot to show enhancement from full SAMS
- get info on O-ring from engineering. (material, lifetime expectations, also when did this appear?)
- Full base design (Feb18), but w/o dump shield
- Use Al around O-ring
- No SAMS
- PREX-I SAMS
- test 1/2 size O-ring (PREX) (PREX-I SAMS)
- Done, but dumb results. Compare 1/2 size O-ring with 1/2 of full size O-ring.
- test no material around O-ring (PREX) (PREX-I SAMS)
- CREX
- No SAMS
- PREX-I SAMS
- check beam-offset run
- Use Al around O-ring
- Results for alternative SAM configs
- Final estimate use full base design (Feb18), including dump shield
- PREX-2
- CREX
SAM redesign
- calculate rates vs angle
- calculate doses vs angles
- get details on beer can, make default design including welding
- Attempt final design
Activation Estimation
- Downstream septum beampipe flange, contact dose
- Downstream septum beampipe flange, whole body dose
- CREX activation estimates
- HDPE activation.
- DUST ACTIVATION?
HDPE parameters
- Total / peak radiation dose. Damage?
- spec non-flamable HDPE, or devise fireproofing
Thermal Neutrons:
- count thermal/near thermal (<1eV rate), assume 8MeV / n energy release, compare to E&M power
- plot sources of thermal neutrons in hall, using hall-lid and HRS-platform detectors
- consider effect of 5% boron
- calculate thermal neutrons at Compton polarimeter
