|
TOPIC |
PROJECT/ TASK |
PERSON(s) |
Documentation
&Talks |
|
1. Luminosity |
1.1 Pair-LUMON tracker. 3-d Silicon
(5-40 mrad; beam diagnostic)
1.1.1
Effect of solenoid and crossing angle on ability to
infer beam parameters for pair angular distributions |
1.1.2 Use info
to normalize out pair background in the
LUMON calorimeter electron id analysis |
|
1.2 Pair-LUMON calorimeter.
(5-40 mrad; beam
diagnostic and 2-photon tag/veto). Design criteria
include:
i) fast timing to avoid pileup
ii) ability to resolve 200 GeV electron in
presence of
pair and hadron backgrounds
iii) radiation hard to 100Mrad/year
iv) prompt signal for possible use in
beam-beam
feedback (either inter-train or intra-train)
| 1.2.1
Evaluate Gas Cherenkov |
| 1.2.2
Evaluate SEM |
| 1.2.3
Evaluate Parallel Plate Avalanche Chamber |
1.2.4
Evaluate Quartz Fiber
|
| 1.2.5
Evaluate 3-d Silicon |
|
1.3 Beamstrahlung Detectors
1.3.1
Visible beamstrahlung detector from 1-2mrad
- extraction line design for this |
|
1.4
Detector requirements for Bhabha luminosity
measurement from 40-120 mrad |
1.5 Study
use of vertex detector for measuring pair angular
distribution to infer beam parameters |
|
Sherwood Parker
|
| John Hauptman |
| Yasar Onel |
| Yasar Onel |
| Yasar Onel, Stefan Spanier, Bill Bugg |
| Sherwood Parker |
|
|
|
|
|
|
LCRD/UCLC 3.9
|
| LCRD/UCLC 3.1 |
| LCRD/UCLC 3.2 |
| LCRD/UCLC 3.2 |
LCRD/UCLC 3.10
LCRD/UCLC 3.6 |
| |
|
|
|
|
|
|
2. Luminosity
Spectrum |
2.1 Document effects from beam energy spread,
energy-z
correlation, kink instability |
2.2 Study systematic effects in Bhabha
acolinearity
analysis, including effects of beamstrahlhung,
disruption
angles, ISR |
2.3 Utilize Bhabha energies as well
|
2.3 Physics analyses to study sensitivity to
beamstrahlung
and energy spread:
| 2.3.1
Slepton masses |
| 2.3.2
Higgs mass |
| 2.3.3
top mass |
| 2.3.4
new narrow resonance (ex. KK resonance) |
|
| 2.4 Cradle-to-grave lumi spectrum analysis |
2.5 Study detector requirements for forward
tracking and
calorimetery in region 100-400
mrad for Bhabha
acolinearity analysis; and also 40-100 mrad
if can use
Bhabha energies |
| 2.6 Study machine capabilities for reduced energy
spread |
| 2.7 Effect of imperfect crab
crossing on energy bias |
|
Mike Woods,
Arik Florimonte |
Arik Florimonte
|
Eric Torrence,
Tim Barklow |
| Uriel Nauenberg |
| Rich Partridge |
| - |
| - |
|
| |
|
| |
| |
|
|
|
3. Energy |
3.1 Document relevant beam
parameters (energy jitter,
energy variation over train, ...) |
3.2 Determine Energy
spectrometer requirements
(resolution, relative and absolute
precision: per bunch,
per train, per second, per minute) |
3.3 BPM Spectrometer
| 3.3.1
Design into the lattice upstream of IP |
3.3.2
Evaluate SR energy loss between spectrometer
and IP; evaluate energy fluctuations due to orbit
variations |
3.3.3
Document expected performance, R&D
needed |
|
3.4 Synchrotron Stripe
Spectrometer
| 3.4.1
Design into the lattice downstream of IP |
3.4.2
Evaluate SR energy loss between spectrometer
and IP; evaluate energy fluctuations due to orbit
variations |
3.4.3
Document expected performance, R&D
needed |
|
3.5 Physics analysis to
determine lum-wted Energy, L(E)
| 3.5.1
radiative return to Z events |
| 3.5.2
W-pair events, using W-mass |
|
|
|
|
Mike Hildreth,
Yury Kolomensky
|
Eric Torrence,
Stan Hertzbach
|
|
|
|
|
|
LCRD/UCLC 3.5
|
LCRD/UCLC 3.4
|
|
|
|
4. Energy
Spread |
4.1 Evaluate
measurement capability of synchrotron stripe
spectrometer |
4.2 Other measurements:
4.2.1
wire scanner at extraction line chicane
|
| 4.2.2
laser wire |
| 4.2.3
synchrotron radiation |
|
|
Eric Torrence,
Stan Hertzbach |
|
|
|
|
|
5. Polarization |
5.1 Document laser system for extraction line
polarimeter
|
5.2 Evaluate and document spin transport effects and
difference between polarimeter measurement
and
lum-wted polarization; give input for
vertical bends
needed to compensate vertical steering from
crossing
angle |
5.3 Document baseline Compton polarimeter design
in
extraction line |
| 5.4 Study backgrounds for baseline Compton polarimeter |
5.5 Study pair spectrometer for Compton gamma
measurements |
5.6 Quartz Fiber Detector capabilities for
Compton
electrons and Compton gammas |
| 5.7 Study use of forward W-pairs for polarimetry |
| 5.8 Design for upstream Compton
polarimeter |
|
Ken Moffeit,
Mike Woods |
Ken Moffeit
|
Ken Moffeit,
Mike Woods |
| William Oliver |
Ken Moffeit,
Stefan Spanier |
Yasar Onel, Stefan
Spanier, Bill Bugg |
| |
| |
|
|
6. Crossing
Angle |
6.1 Evaluate and document relative merits of crossing angle
versus head-on for the cold machine for
considerations
of beam instrumentation. |
6.2 Evaluate effect on lumi spectrum
determination. Is
crossing angle still equivalent to a simple
boost, when
beam radiation and energy spread is
considered? |
|
Eric Torrence,
Mike Woods
|
Tim Barklow
|
|
|
|
7. Giga-Z |
7.1 Study and evaluate machine parameters and
detector/instrumentation considerations,
including with
reduced energy spread and reduced
beamstrahlung |
7.2 Study and evaluate energy and polarization
instrumentation
(ex. Compton edge not as separated from primary beam
energy; beamstrahlung is much reduced) |
|
|
|
|
8. e-e- |
8.1 Study and evaluate machine parameters and
instrumentation issues |
Mike Woods, Ken Moffeit, Arik Florimonte |
Talk at e-e-2003 |
9. ESA Beam
Test Proposal |
| 5.1 IP BPM |
5.2 Energy BPMs
|
5.3 Synchrotron stripe
spectrometer
|
| 5.4 Pair Detectors |
| 5.5 Beamline Design |
5.6 Beam Simulations
| 5.6.1
Incoming primary beam |
| 5.6.2
Disrupted beam, photons, pairs from fixed target |
|
| 5.7 ESA as a test beam facility |
|
| Phil Burrows |
Mike Hildreth,
Yury Kolomensky,
David Miller |
Eric Torrence,
Stan Hertzbach |
| |
| Ray Arnold |
|
|
| |
|
|