Page 1 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
Summary : we have evaluated the suitability of the T11
beam line of the CERN PS East Area for use by the CLOUD
experiment. We find that T11 can be well matched to the
CLOUD experimental requirements using optical changes but
very little modifications in terms of hardware. This
would require a) increasing the gap of the last bending
magnet to 200 mm and b) relocation of the gaz mixing zone
now used by ALICE. The presently proposed CLOUD equipment
is compatible with the 2.5 m T11 beam height. Finally,
providing a fixed location for CLOUD at the end of the
T11 beam line will maintain flexibility for other users
in front when needed. Switching from CLOUD to other users
only requires adjustment of the line magnets currents.
We have received a request from the CLOUD experiment aiming to analyse the effect
of cosmic radiation on cloud particles nucleation in the upper atmosphere. Time
averaged fluxes of MIP of the order of 0.4k/s to 40 k/s would be required with no
special constraints on momentum resolution, particle species or time structure.
However, the experiment requires to illuminate a big area (2m x 2m) with some
reasonably homogeneous flux. This is a quite unusual and challenging requirement.
Moreover, the beam intensity should be adjustable with minimal effects on the
beam size and distribution.
Taking into account the space required, the expected zones availabilities,
geometry and beam caracteristics; T11 seems to match CLOUD requirement provided
the beam size requirements can be fulfilled.
Some geometrical adjustment should be made to the zone, the experiment would sit
at its far end which has the triple advantage of :
- giving some space and a fixed location to the experiment.
- leaving space in front of CLOUD for potential other use when needed.
- allowing the beam to expand thanks to its divergence.
Ther is however the need to relocate the gas mixing zone now used by ALICE.
In general, physicists do require a small beam size, well defined and
reproducible. The standard T11 is no exception to this but it is somewhat less
used due to its low momentum limit and its relatively big H spot size and
momentum resolution. This will not be a limitation in the present request.
Taking the required footprint of CLOUD, the distance from the present nominal
focus of T11 to the mid plane of the chamber is very close to 10 m and
computations will be done using this figure.
Running the normal optics for T11 gives, as expected, a much too small beam and a
different scheme should be sought. The minimum possible physical changes is
desired in order to reduce costs and keep the line useable for other experiments.
The basic data for the normal T11 are :
~ 500 k/spill for 1% momentum bite and V collimator wide open
~ 56 mm and 5.6 mrad radii in the H direction.
~ 106 mm and 10.6 mrad radii in the V direction.
The obvious idea is to make the focus as close as possible to the last doublet in
order to increase the divergence in both planes. For an efficient H expansion,
the last quad should be convergent, filled, with the outer ray just grazing the
opposite pole face of BVT01. This implies a complete reversal of the normal
optics except for the field lens to ensure a well behaved beam.
A first run using this idea gives promising results with too big V dimension
(exceeding the useful pole width of BVT01) and a too small H dimension (~ 600 mm
2/16/2016
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T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
radius) limited by the BVT01 gap of 140 mm.
The next step is to change the gap of BVT01 to 200 mm which is quite easy to do
and will not limit the useable momentum as we have enough magnetic force at hand.
This being done we made an optimisation using mainly TRANSPORT code in order to
find a solution which will :
- have the structure FDFDF with intermediate H focus in the mid plane of the
momentum collimator for intensity control.
- fill horizontally QDE05 (H focusing) and make 100 mm at the output face of
BVT01.
- make the same V size (limited by V aperture in QFO04) at CLOUD location,
checking that the beam is kept in the polar space of BVT01 (520 mm in all).
After some trials and errors, a satisfactory solution is found as given in the
table below :
Table 1. Quadrupoles field for FDFDF optics
Qde01
Qfo02
Qfo03
Qfo04
Qde05
2/16/2016
+0.36621 T
-0.36401 T
+0.477915
-0.83
+1.0232
@100
@100
@50
@100
@100
mm
mm
mm
mm
mm
File DocNewEH\T11_cloud\Cloud3_design.doc
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T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
As seen on the above optics, the first V focus is in the middle of the field lens
which is convenient but it can be moved such as to expand the V beam and thus
decrease its density (geometric limit in Q4). The second V focus is quite close
to the mid plane of Q5, making the V size quite sensitive to the setting of Q4
but not to Q5.
From the TRANSPORT output, we can compute that the angular limits are inside Q4
and Q5, of 6.18 and 7.48 mrad (H & V) giving a geometric acceptance close to 42 %
of the original optics. The intensity is then supposed to scale accordingly.
By transcripting the quadrupole field values in a TURTLE deck, the behaviour of
the optics can be more fully described, conducting to the next table in which the
last column has been added for normalisation as it represents the behaviour of
unmodified T11, including the transmitted intensity.
Table 2. Effects of momentum collimator, sizes and intensity.
p-Slit
N pour 105
X (cm)
Y (cm)
X’ (mrad)
Y’ (mrad)
p/p (%)
+-50 mm
17571
40.2
40.7
24.8
22.4
2.68
+-30 mm
16087
40.2
41.0
24.8
22.6
2.55
+-15mm
9289
40.0
41.8
24.7
23.0
2.2
+-8 mm
4883
39.4
42.0
24.3
23.1
1.65
+-4 mm
2060
37.7
43.8
23.3
24.1
1.60
+-2 mm
627
34.0
43.6
21.0
24.0
1.72
1% norm
1516
5.62
10.6
5.62
10.6
1.01
The only variable is the width of the momentum slit and, as expected, the
intensity is tuneable without noticeable effect on the beam size or distribution
as long as we do not cut into the H divergence. From this point on, the intensity
start to vary quadratically and the beam size decreases (computed to start close
to 3 mm half width). The V collimator is wide opened.
Example of the beam distribution is shown below (for 15 mm opening).
The beam dimension has been checked to be contained in BVT01 adequate field
region (total width ~ 335 mm, pole width 520 mm).
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Page 4 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
Table 3. Effect of the vertical collimator (in the shadow of Q4 above 23 mm)
V-slit
X (cm)
Y (cm)
X’ (mrad)
Y’ (mrad)
p/p (%)
N
Fully opened
40.2
40.7
24.8
22.4
2.7
17571
+- 20 mm
40.1
39.8
24.8
21.8
2.7
15295
+- 10 mm
39.9
27.6
24.6
15.1
2.8
8543
+- 5 mm
40.0
16.4
24.7
9.0
2.7
4268
The table has been computed with the momentum slit fully opened to reduce
computing time; their effect are not completely orthogonal. As can be seen, the
reduction in intensity comes from the reduction in the V divergence with the
consequence of a smaller V spot at the experiment. This could probably be
corrected by altering the optics (several possible ways).
Preliminary expectations and conclusions.
Expected flux :
With standard T11 at 1% momentum bite, we expect something like 500 k/spill. As
the momentum acceptance is close to 9.0% in both cases, the new optics geometric
acceptance being ~42% of the original, we can expect a maximum flux of ~ 130 kHz
for one single spill every 14.4s supercycle (170 kHz from the TURTLE
renormalisation). It is easy to increase this figure by using several
spill/supercycle.
The flux can be reduced simply by a factor ~25 (see table 2) using the momentum
collimator with almost no impact on the geometrical behaviour of the beam. An
additional factor of ~4 can be found with the V acceptance collimator ; however
this will imply some alteration of the optics if we have to minimise the
geometrical consequences.
If more reduction of the flux is still needed (the maximum value is way above the
maximum requested by CLOUD which can give trouble to match the low end) several
other techniques can be used :
 Alteration of the target efficiency and/or the primary beam intensity. As
this also changes the beam conditions for T9 and T10 it needs care (limited
range, only ~0.5..2).
 Insertion of material at some strategic location of the line.
Expected beam size :
The simulations above let expect a beam size (when not intercepting with the V
collimator) of about 1.45 m in both transverse directions in the mid plane of the
experimental set-up, this is suitable for CLOUD. The H distribution is almost
2/16/2016
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 5 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
homogeneous, the V slightly less but still quite good. Both have sharp edges and
are fully contained in the optics with no interception outside the primary zone
for a clean beam.
Feasability :
There was not need of any modification in the physical components and geometry
apart from the increase in the BVT01 gap. All tuning is done using existing
components.
The optics has been computed for 3.5 GeV/c momentum which is the nominal maximum
of the T11 line. Some magnets (Q4 and Q5) are quite close to their maximim rating
and it would be wise to reduce somewhat this momentum in operation. It should be
noted that the ‘natural’ divergences are such that the multiple scattering in 15
m of air will cause no harm even at low momentum.
Geometric constraints :
As already stated, the experimental set up interferes with the present gas mixing
zone of ALICE. A formal approval should be obtained from them and some way to
handle the move (manpower, money and time) shall be found.
The beam axis is located at 2.5 m above the hall floor and this is fully
compatible with the proposed CLOUD experimental equipment.
Radiations :
The expanded beam as used by CLOUD extends above the present shielding dump at
the end of T11. Some extended shielding is probably needed and should be
discussed with RP people. Remember that the beam is strongly divergent however,
meaning that the dose rate decreases quite rapidly with distance anyway.
Instrumentation :
Some has to be installed in order to assess the effective beam intensity, losses
and profile. A wide area plane scintillator upstream of BVT01 should be adequate
to measure intensity, another (perhaps split in several strips) downstream of
BVT01 and used in coincidence should give some hint about interception and V
divergence (radiation safety).
The CLOUD experiment will include large area counter hodoscopes near to the
detector to measure the beam profile and flux. These can be used for beam tuning
and for radiation protection monitors.
Not done yet :
How to alter the optics in order to recover the V size if we have to use the V
collimator – or – how to use Q1 and Q2 to replace it (by changing the divergences
upstream of the last doublet).
Attached documents :
TRANSPORT list of optical parameters along with the derived plots for
- Standard T11 optics.
- Improved T11 optics with better p/p but lower geometric acceptance.
- New FDFDF proposed optics as described in this note.
2/16/2016
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 6 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
Version as documented and used for tests in T11. Optics is made such that various tunings are as independent as possible. First the field lens Q3 is tuned such that the H dispersion
vanishes in the experimental area; then the first H and V focii are located at the centre of this field lens using Q1 & Q2, last the user focus is set using Q4 and Q5. Lenses polarities are
choosen in order to : enhance the momentum resolution and the total transmission. The best choice is DFFFD. It was expected that Q1 and Q2 would define the geometrical acceptance;
in the nominal focus tuning, Q4 cuts an extra 10% of what has been transmitted by Q2 in the H plane, with very little harm as it is still inside the primary area (shielded).
File is T11_cloud00 (-3.8369,+3.7868,+4.77915,+5.3847,-5.0730) H limit in Q4, V limit in Q1 (5.951*18.351 =343.1steradian)
Size 10 m downstream (semi axis in mm) : 56.1 H, 103.5 V
ZT11 pour CLOUD (_00)
TRANSPORT RUN 6/01/05
POSITION TYPE
STRENGTH *
H O R I Z O N T A L
*
V E R T I C A L
*
D I S P E R S I O N
METERS
T*M,T/M*M *
R11
R12
R21
R22 *
R33
R34
R43
R44 *
R16
R26
R36
R46
T/M**2*M *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/PC
MR/PC
MM/PC
MR/PC
************************************************************************************************************************************
0.000 3 PG3H
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
0.000 3 TV7
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
4.050 3 BS
*
1.000
4.050
0.000
1.000 *
1.000
4.050
0.000
1.000 *
0.000
0.000
0.000
0.000
4.700 3
*
1.000
4.700
0.000
1.000 *
1.000
4.700
0.000
1.000 *
0.000
0.000
0.000
0.000
6.300 5 QDE1
-6.1390 *
1.451
8.654
0.603
4.284 *
0.608
4.243 -0.455 -1.531 *
0.000
0.000
0.000
0.000
7.000 3
*
1.873 11.652
0.603
4.284 *
0.289
3.171 -0.455 -1.531 *
0.000
0.000
0.000
0.000
8.600 5 QFO2
6.0589 *
1.984 13.084 -0.474 -2.619 *
-0.415
1.777 -0.486 -0.329 *
0.000
0.000
0.000
0.000
9.310 3
*
1.648 11.225 -0.474 -2.619 *
-0.760
1.544 -0.486 -0.329 *
0.000
0.000
0.000
0.000
11.490 4 BHZ1
3.1522 *
0.628
5.583 -0.474 -2.619 *
-1.791
0.769 -0.443 -0.368 *
-2.925 -2.717
0.000
0.000
12.210 3 CV46
*
0.287
3.697 -0.474 -2.619 *
-2.110
0.504 -0.443 -0.368 *
-4.881 -2.717
0.000
0.000
13.180 3
*
-0.173
1.157 -0.474 -2.619 *
-2.539
0.147 -0.443 -0.368 *
-7.516 -2.717
0.000
0.000
13.600 5 QFO3
4.0145 *
-0.354
0.000 -0.382 -2.821 *
-2.915
0.000 -1.369 -0.343 *
-8.094
0.000
0.000
0.000
13.600 3 Lv01
*
-0.354
0.000 -0.382 -2.821 *
-2.915
0.000 -1.369 -0.343 *
-8.094
0.000
0.000
0.000
14.020 5 QFO3
4.0145 *
-0.486 -1.156 -0.236 -2.620 *
-3.717 -0.148 -2.496 -0.368 *
-7.516
2.717
0.000
0.000
14.945 3 CH75
*
-0.704 -3.579 -0.236 -2.620 *
-6.027 -0.489 -2.496 -0.368 *
-5.003
2.717
0.000
0.000
14.945 3 Lh01
*
-0.704 -3.579 -0.236 -2.620 *
-6.027 -0.489 -2.496 -0.368 *
-5.003
2.717
0.000
0.000
15.710 3
*
-0.884 -5.583 -0.236 -2.620 *
-7.936 -0.771 -2.496 -0.368 *
-2.925
2.717
0.000
0.000
17.890 4 BHZ2
3.1522 *
-1.391 -11.225 -0.236 -2.620 * -13.087 -1.545 -2.143 -0.329 *
0.000
0.000
0.000
0.000
19.320 3
*
-1.728 -14.971 -0.236 -2.620 * -16.151 -2.016 -2.143 -0.329 *
0.000
0.000
0.000
0.000
20.480 5 QFO4
6.2463 *
-1.465 -13.294
0.666
5.359 * -24.178 -3.098 -12.406 -1.631 *
0.000
0.000
0.000
0.000
20.920 3
*
-1.172 -10.937
0.666
5.359 * -29.637 -3.816 -12.406 -1.631 *
0.000
0.000
0.000
0.000
22.080 5 QDE5
-5.8847 *
-0.682 -7.453
0.220
0.937 * -34.415 -4.466
4.572
0.564 *
0.000
0.000
0.000
0.000
23.930 3
*
-0.275 -5.719
0.220
0.937 * -25.956 -3.422
4.572
0.564 *
0.000
0.000
0.000
0.000
24.910 3
*
-0.060 -4.800
0.220
0.937 * -21.475 -2.869
4.572
0.564 *
0.000
0.000
0.000
0.000
26.090 4 BVT1
0.4551 *
0.200 -3.690
0.220
0.944 * -16.084 -2.204
4.568
0.564 *
0.000
0.000
0.230
0.390
27.300 3 XH26
*
0.466 -2.548
0.220
0.944 * -10.557 -1.522
4.568
0.564 *
0.000
0.000
0.702
0.390
28.000 3
*
0.620 -1.887
0.220
0.944 *
-7.359 -1.127
4.568
0.564 *
0.000
0.000
0.975
0.390
30.000 3 Foc
*
1.060
0.000
0.220
0.944 *
1.777
0.000
4.568
0.564 *
0.000
0.000
1.754
0.390
30.000 3 Lv02
*
1.060
0.000
0.220
0.944 *
1.777
0.000
4.568
0.564 *
0.000
0.000
1.754
0.390
30.000 3 Lh02
*
1.060
0.000
0.220
0.944 *
1.777
0.000
4.568
0.564 *
0.000
0.000
1.754
0.390
40.000 3
*
3.258
9.438
0.220
0.944 *
47.458
5.638
4.568
0.564 *
0.000
0.000
5.653
0.390
40.000 3 ENDP
*
3.258
9.438
0.220
0.944 *
47.458
5.638
4.568
0.564 *
0.000
0.000
5.653
0.390
2/16/2016
File DocNewEH\T11_cloud\Cloud3_design.doc
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2/16/2016
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 8 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
Slightly modified version of the T11 optics, made in order to enhance the limit p/p. The first V focus is kept in the field lens centre, the first H focus being displaced at the centre of
the momentum collimator. This does not change the dispersion at this point but reduces the betatronic spot size for a theoritical improvement of ~5 in the limiting resolution. The price
to pay is a reduced transmitted intensity due to the geometrical blow-up in the second doublet (losses still harmless!).
File T11_cloud01 (-3.5621,+2.7520,+4.77915,+5.9966,-5.2595) H limit in Q4, V limit in Q5 (3.062*16.437 =158.1steradian)
Size 10 m downstream (semi axis in mm) : 56 H, 114 V (quite similar in size as case 00, intensity reduced by 2.2)
ZT11 pour CLOUD
POSITION TYPE
METERS
TRANSPORT RUN 6/01/05
STRENGTH *
H O R I Z O N T A L
*
V E R T I C A L
*
D I S P E R S I O N
T*M,T/M*M *
R11
R12
R21
R22 *
R33
R34
R43
R44 *
R16
R26
R36
R46
T/M**2*M *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/PC
MR/PC
MM/PC
MR/PC
************************************************************************************************************************************
0.000 3 PG3H
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
0.000 3 TV7
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
4.050 3 BS
*
1.000
4.050
0.000
1.000 *
1.000
4.050
0.000
1.000 *
0.000
0.000
0.000
0.000
4.700 3
*
1.000
4.700
0.000
1.000 *
1.000
4.700
0.000
1.000 *
0.000
0.000
0.000
0.000
6.300 5 QDE1
-5.6994 *
1.417
8.475
0.554
4.022 *
0.634
4.381 -0.427 -1.373 *
0.000
0.000
0.000
0.000
7.000 3
*
1.805 11.290
0.554
4.022 *
0.335
3.419 -0.427 -1.373 *
0.000
0.000
0.000
0.000
8.600 5 QFO2
4.4032 *
2.087 13.858 -0.219 -0.975 *
-0.312
2.080 -0.423 -0.385 *
0.000
0.000
0.000
0.000
9.310 3
*
1.932 13.166 -0.219 -0.975 *
-0.613
1.806 -0.423 -0.385 *
0.000
0.000
0.000
0.000
11.490 4 BHZ1
3.1522 *
1.460 11.067 -0.219 -0.975 *
-1.512
0.900 -0.387 -0.431 *
-2.925 -2.717
0.000
0.000
12.210 3 CV46
*
1.303 10.366 -0.219 -0.975 *
-1.791
0.590 -0.387 -0.431 *
-4.881 -2.717
0.000
0.000
13.180 3
*
1.090
9.421 -0.219 -0.975 *
-2.167
0.173 -0.387 -0.431 *
-7.516 -2.717
0.000
0.000
13.600 5 QFO3
4.0145 *
0.923
8.349 -0.569 -4.067 *
-2.492
0.000 -1.179 -0.401 *
-8.094
0.000
0.000
0.000
13.600 3 Lv01
*
0.923
8.349 -0.569 -4.067 *
-2.492
0.000 -1.179 -0.401 *
-8.094
0.000
0.000
0.000
14.020 5 QFO3
4.0145 *
0.624
6.086 -0.838 -6.579 *
-3.181 -0.173 -2.142 -0.431 *
-7.516
2.717
0.000
0.000
14.945 3 CH75
*
-0.152
0.000 -0.838 -6.579 *
-5.163 -0.571 -2.142 -0.431 *
-5.003
2.717
0.000
0.000
14.945 3 Lh01
*
-0.152
0.000 -0.838 -6.579 *
-5.163 -0.571 -2.142 -0.431 *
-5.003
2.717
0.000
0.000
15.710 3
*
-0.793 -5.033 -0.838 -6.579 *
-6.802 -0.901 -2.142 -0.431 *
-2.925
2.717
0.000
0.000
17.890 4 BHZ2
3.1522 *
-2.599 -19.201 -0.838 -6.579 * -11.222 -1.807 -1.839 -0.385 *
0.000
0.000
0.000
0.000
19.320 3
*
-3.798 -28.609 -0.838 -6.579 * -13.853 -2.357 -1.839 -0.385 *
0.000
0.000
0.000
0.000
20.480 5 QFO4
6.9561 *
-3.423 -26.061
1.446 10.716 * -21.310 -3.720 -11.750 -2.098 *
0.000
0.000
0.000
0.000
20.920 3
*
-2.787 -21.347
1.446 10.716 * -26.480 -4.643 -11.750 -2.098 *
0.000
0.000
0.000
0.000
22.080 5 QDE5
-6.1010 *
-1.824 -14.425
0.299
1.814 * -31.145 -5.501
4.117
0.695 *
0.000
0.000
0.000
0.000
23.930 3
*
-1.271 -11.070
0.299
1.814 * -23.529 -4.215
4.117
0.695 *
0.000
0.000
0.000
0.000
24.910 3
*
-0.978 -9.292
0.299
1.814 * -19.495 -3.534
4.117
0.695 *
0.000
0.000
0.000
0.000
26.090 4 BVT1
0.4551 *
-0.625 -7.143
0.300
1.827 * -14.641 -2.715
4.113
0.694 *
0.000
0.000
0.230
0.390
27.300 3 XH26
*
-0.262 -4.933
0.300
1.827 *
-9.665 -1.875
4.113
0.694 *
0.000
0.000
0.702
0.390
28.000 3
*
-0.052 -3.654
0.300
1.827 *
-6.786 -1.389
4.113
0.694 *
0.000
0.000
0.975
0.390
30.000 3 Foc
*
0.547
0.000
0.300
1.827 *
1.439
0.000
4.113
0.694 *
0.000
0.000
1.754
0.390
30.000 3 Lv02
*
0.547
0.000
0.300
1.827 *
1.439
0.000
4.113
0.694 *
0.000
0.000
1.754
0.390
30.000 3 Lh02
*
0.547
0.000
0.300
1.827 *
1.439
0.000
4.113
0.694 *
0.000
0.000
1.754
0.390
40.000 3
*
3.546 18.264
0.300
1.827 *
42.565
6.942
4.113
0.694 *
0.000
0.000
5.653
0.390
2/16/2016
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 9 of 12
40.000
2/16/2016
3
T11 for CLOUD (DRAFT)
ENDP
*
3.546
18.264
0.300
L. Durieu (AB/ABT-EA)
1.827 *
42.565
6.942
4.113
File DocNewEH\T11_cloud\Cloud3_design.doc
0.694 *
0.000
0.000
5.653
0.390
Page 10 of 12
2/16/2016
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 11 of 12
T11 for CLOUD (DRAFT)
L. Durieu (AB/ABT-EA)
ZT11 pour CLOUD (_03)
TRANSPORT RUN 7/01/05
POSITION TYPE
STRENGTH *
H O R I Z O N T A L
*
V E R T I C A L
*
D I S P E R S I O N
METERS
T*M,T/M*M *
R11
R12
R21
R22 *
R33
R34
R43
R44 *
R16
R26
R36
R46
T/M**2*M *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/MM
MM/MR
MR/MM
MR/MR *
MM/PC
MR/PC
MM/PC
MR/PC
************************************************************************************************************************************
0.000 3 PG3H
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
0.000 3 TV7
*
1.000
0.000
0.000
1.000 *
1.000
0.000
0.000
1.000 *
0.000
0.000
0.000
0.000
4.050 3 BS
*
1.000
4.050
0.000
1.000 *
1.000
4.050
0.000
1.000 *
0.000
0.000
0.000
0.000
4.700 3
*
1.000
4.700
0.000
1.000 *
1.000
4.700
0.000
1.000 *
0.000
0.000
0.000
0.000
6.300 5 QDE1
5.8594 *
0.625
4.330 -0.437 -1.431 *
1.429
8.540
0.572
4.117 *
0.000
0.000
0.000
0.000
7.000 3
*
0.319
3.329 -0.437 -1.431 *
1.829 11.421
0.572
4.117 *
0.000
0.000
0.000
0.000
8.600 5 QFO2
-5.8242 *
-0.342
2.141 -0.443 -0.151 *
1.945 12.903 -0.438 -2.389 *
0.000
0.000
0.000
0.000
9.310 3
*
-0.657
2.034 -0.443 -0.151 *
1.634 11.207 -0.438 -2.389 *
0.000
0.000
0.000
0.000
11.490 4 BHZ1
3.1522 *
-1.611
1.710 -0.443 -0.151 *
0.620
5.587 -0.475 -2.672 *
-2.925 -2.717
0.000
0.000
12.210 3 CV46
*
-1.930
1.601 -0.443 -0.151 *
0.278
3.663 -0.475 -2.672 *
-4.881 -2.717
0.000
0.000
13.180 3
*
-2.359
1.455 -0.443 -0.151 *
-0.184
1.071 -0.475 -2.672 *
-7.516 -2.717
0.000
0.000
13.600 5 QFO3
4.0145 *
-2.373
1.290
0.381 -0.628 *
-0.402
0.000 -0.575 -2.490 *
-8.094
0.000
0.000
0.000
13.600 3 Lv01
*
-2.373
1.290
0.381 -0.628 *
-0.402
0.000 -0.575 -2.490 *
-8.094
0.000
0.000
0.000
14.020 5 QFO3
4.0145 *
-2.047
0.940
1.150 -1.016 *
-0.678 -1.071 -0.758 -2.672 *
-7.516
2.717
0.000
0.000
14.945 3 CH75
*
-0.984
0.000
1.150 -1.016 *
-1.380 -3.542 -0.758 -2.672 *
-5.003
2.717
0.000
0.000
14.945 3 Lh01
*
-0.984
0.000
1.150 -1.016 *
-1.380 -3.542 -0.758 -2.672 *
-5.003
2.717
0.000
0.000
15.710 3
*
-0.104 -0.778
1.150 -1.016 *
-1.960 -5.586 -0.758 -2.672 *
-2.925
2.717
0.000
0.000
17.890 4 BHZ2
3.1522 *
2.372 -2.966
1.150 -1.016 *
-3.541 -11.205 -0.666 -2.389 *
0.000
0.000
0.000
0.000
19.320 3
*
4.016 -4.420
1.150 -1.016 *
-4.493 -14.622 -0.666 -2.389 *
0.000
0.000
0.000
0.000
20.480 5 QFO4
-9.6280 *
7.652 -8.084
5.611 -5.797 *
-3.165 -10.518
2.770
8.891 *
0.000
0.000
0.000
0.000
20.920 3
*
10.121 -10.634
5.611 -5.797 *
-1.946 -6.606
2.770
8.891 *
0.000
0.000
0.000
0.000
22.080 5 QDE5
11.8691 *
10.020 -10.435 -5.768
6.107 *
0.673
1.564
2.180
6.553 *
0.000
0.000
0.000
0.000
23.930 3
*
-0.651
0.862 -5.768
6.107 *
4.706 13.688
2.180
6.553 *
0.000
0.000
0.000
0.000
24.910 3
*
-6.303
6.847 -5.768
6.107 *
6.843 20.110
2.180
6.553 *
0.000
0.000
0.000
0.000
26.090 4 BVT1
0.4551 * -13.104 14.047 -5.753
6.091 *
9.416 27.843
2.182
6.559 *
-0.001
0.000
0.230
0.390
27.300 3 XH26
* -20.065 21.416 -5.753
6.091 *
12.056 35.780
2.182
6.559 *
-0.001
0.000
0.702
0.390
28.000 3
* -24.092 25.680 -5.753
6.091 *
13.584 40.371
2.182
6.559 *
-0.001
0.000
0.975
0.390
30.000 3 Foc
* -35.598 37.861 -5.753
6.091 *
17.948 53.489
2.182
6.559 *
-0.001
0.000
1.754
0.390
30.000 3 Lv02
* -35.598 37.861 -5.753
6.091 *
17.948 53.489
2.182
6.559 *
-0.001
0.000
1.754
0.390
30.000 3 Lh02
* -35.598 37.861 -5.753
6.091 *
17.948 53.489
2.182
6.559 *
-0.001
0.000
1.754
0.390
40.000 3
* -93.128 98.769 -5.753
6.091 *
39.769 119.078
2.182
6.559 *
-0.004
0.000
5.653
0.390
40.000 3 ENDP
* -93.128 98.769 -5.753
6.091 *
39.769 119.078
2.182
6.559 *
-0.004
0.000
5.653
0.390
Polar field in Quads for this optic : +3.6621,-3.6401,+4.77915,-8.3,+10.232 kGauss
In Q5, 92 mm H means 7.476 mrad, hence 100.92 mm at end of BVT01 and 738.4 mm, 45.5 mrad at CLOUD location
In Q4, 92 mm V means 6.177 mrad, hence 168.34 mm at BVT01 end, 735.5 mm, 40.5 mrad at CLOUD location
2/16/2016
File DocNewEH\T11_cloud\Cloud3_design.doc
Page 12 of 12
T11 for CLOUD (DRAFT)
E:\DocNewEH\T11_cloud\Cloud3_design.docpage 12
L. Durieu (AB/ABT-EA)
2/16/2016