Detector System General Naming Scheme
Detector System General Naming Scheme
Detector System General Naming Scheme
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EDMS 906715 V0.3<br />
2008 May 30<br />
Gennaro Ruggiero<br />
Product breakdown structure and naming scheme of<br />
the Roman Pot <strong>System</strong><br />
The aim of this document is to present the breakdown structure of the Totem<br />
Roman Pot <strong>System</strong> and to define a common nomenclature that can be coherently<br />
employed by all the TOTEM subsystems working on the TOTEM Roman Pots.<br />
Hierarchy<br />
The Roman Pot <strong>System</strong> develops on a hierarchical structure of eight levels<br />
which go from the whole roman pot system (“system”) to its ultimate granularity<br />
(“strip”). The sequence of the eight levels is shown in Figure 1.<br />
system<br />
sector<br />
station<br />
unit<br />
pot<br />
plane<br />
vfat<br />
strip<br />
Figure 1 Hierarchy in the Roman Pot <strong>System</strong><br />
Product Breakdown Structure (PBS)<br />
The mirror symmetry with respect to the IP5 has been used to define the<br />
names at the different levels. In particular, for the sector is repeated the same<br />
convention used by the LHC hardware scheme (“sector 45” and “sector56”), for the<br />
station and the unit is used the distance from IP5 (“station 147”, “station 220” and<br />
“unit near”, “unit far”). For the pot the name is derived form its position with respect<br />
to the beam axis (“pot top”, “pot horizontal”… ), while the planes in a pot are counted<br />
starting from the one closest to the IP5 (“plane 01” plane 02” …). In each plane the<br />
VFAT are ordered with the VFAT1 connected to the outer long strips of the silicon<br />
sensor and the VFAT4 connected to the shorter strips.
EDMS 906715 V0.3<br />
2008 May 30<br />
Gennaro Ruggiero<br />
The Roman Pot <strong>System</strong> breakdown structure tree is shown in Figure 2 .<br />
system<br />
sector<br />
station<br />
unit<br />
pot<br />
plane<br />
vfat<br />
strip<br />
10<br />
127<br />
bottom<br />
4<br />
2<br />
220<br />
far<br />
horizontal<br />
02<br />
2<br />
1<br />
45<br />
147<br />
near<br />
top<br />
01<br />
1<br />
0<br />
Roman Pot<br />
Point 5<br />
56<br />
147 220<br />
near far<br />
top horizontal bottom<br />
01<br />
02 10<br />
1<br />
2 4<br />
0<br />
1 2 127<br />
Figure 2 Product Breakdown Structure for the Roman Pot <strong>System</strong>.
EDMS 906715 V0.3<br />
2008 May 30<br />
Gennaro Ruggiero<br />
<strong>Naming</strong> Examples<br />
The naming of each part of the Roman Pot system can be derived by adding up<br />
the information of all the hierarchy levels in which the part is contained, following the<br />
order given by the arrow in Figure 1 and abbreviating where possible to two letters<br />
(the first two consonants). For example the 4 th VFAT in the 2 nd Plane of the top Pot in<br />
the far Unit of the Station at 147m of the sector 45 is “rp_45_147_fr_tp_02_4”.
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