3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights
6 * Latest changes by Christian Holm Christensen <cholm@nbi.dk>
8 * See cxx source for full Copyright notice
10 /** @file AliFMDRing.h
11 @author Christian Holm Christensen <cholm@nbi.dk>
12 @date Mon Mar 27 12:47:43 2006
13 @brief FMD ring geometry parameters
15 //__________________________________________________________________
17 // Parameters of the FMD rings.
18 // This class is responsible to make the (common) rings of the three
24 #ifndef ROOT_TObjArray
25 # include <TObjArray.h>
31 /** @brief Geometry description and parameters of a ring in the FMD
34 As there are only 2 kinds of rings @e Inner (@c 'I') and @e
35 Outer (@c 'O') the two objects of this class is owned by the
36 Geometry::FMD singleton object. The 3 Geometry::FMDDetector
37 objects shares these two instances as needed.
40 class AliFMDRing : public TNamed
45 AliFMDRing(Char_t fId);
47 virtual ~AliFMDRing() {}
48 /** Initialize the ring geometry */
51 /** @param x Value of The Id of this ring type */
52 void SetId(Char_t x) { fId = x; }
53 /** @param x Value of With of bonding pad on sensor */
54 void SetBondingWidth(Double_t x=.5) { fBondingWidth = x; }
55 /** @param x Value of Size of wafer the sensor was made from */
56 void SetWaferRadius(Double_t x=13.4/2) { fWaferRadius = x; }
57 /** @param x Value of Thickness of sensor */
58 void SetSiThickness(Double_t x=.03) { fSiThickness = x; }
59 /** @param x Value of Lower radius of ring */
60 void SetLowR(Double_t x) { fLowR = x; }
61 /** @param x Value of Upper radius of ring */
62 void SetHighR(Double_t x) { fHighR = x; }
63 /** @param x Value of Opening angle of the silicon wafers */
64 void SetTheta(Double_t x) { fTheta = x; }
65 /** @param x Value of Number of strips */
66 void SetNStrips(Int_t x) { fNStrips = x; }
67 /** @param x Value of How far the ring extends beyond the z value given. */
68 void SetRingDepth(Double_t x) { fRingDepth = x; }
69 /** @param x Value of Radius of support legs */
70 void SetLegRadius(Double_t x=.5) { fLegRadius = x; }
71 /** @param x Value of Radius of support legs */
72 void SetLegLength(Double_t x=1) { fLegLength = x; }
73 /** @param x Value of Radius of support legs */
74 void SetLegOffset(Double_t x=2) { fLegOffset = x; }
75 /** @param x Value of Staggering offset */
76 void SetModuleSpacing(Double_t x=1) { fModuleSpacing = x; }
77 /** @param x Value of Thickness of print board */
78 void SetPrintboardThickness(Double_t x=.1) { fPrintboardThickness = x; }
79 /** @param x Value of Thickness of copper on print board */
80 void SetCopperThickness(Double_t x=.01) { fCopperThickness = x; }
81 /** @param x Value of Thickness of chip on print board */
82 void SetChipThickness(Double_t x=.01) { fChipThickness = x; }
83 /** @param x Value of spacing between si and PCB */
84 void SetSpacing(Double_t x=.05) { fSpacing = x; }
86 /** @return The Id of this ring type */
87 Char_t GetId() const { return fId; }
88 /** @return With of bonding pad on sensor */
89 Double_t GetBondingWidth() const { return fBondingWidth; }
90 /** @return Size of wafer the sensor was made from */
91 Double_t GetWaferRadius() const { return fWaferRadius; }
92 /** @return Thickness of sensor */
93 Double_t GetSiThickness() const { return fSiThickness; }
94 /** @return Minimum r for an active strip */
95 Double_t GetMinR() const { return fMinR; }
96 /** @return Maximum r for an active strip */
97 Double_t GetMaxR() const { return fMaxR; }
98 /** @return Lower radius of ring */
99 Double_t GetLowR() const { return fLowR; }
100 /** @return Upper radius of ring */
101 Double_t GetHighR() const { return fHighR; }
102 /** @return Opening angle of the sector (half that of silicon wafers) */
103 Double_t GetTheta() const { return fTheta; }
104 /** @return Number of strips */
105 Int_t GetNStrips() const { return fNStrips; }
106 /** @return Number of sectors */
107 Int_t GetNSectors() const { return Int_t(360. / fTheta); }
108 /** @return Number of modules (2 sectors per module) */
109 Int_t GetNModules() const { return GetNSectors() / 2; }
110 /** @return How far the ring extends beyond the z value given. */
111 Double_t GetRingDepth() const { return fRingDepth; }
112 /** @return Radius of support legs */
113 Double_t GetLegRadius() const { return fLegRadius; }
114 /** @return Radius of support legs */
115 Double_t GetLegLength() const { return fLegLength; }
116 /** @return Radius of support legs */
117 Double_t GetLegOffset() const { return fLegOffset; }
118 /** @return Staggering offset */
119 Double_t GetModuleSpacing() const { return fModuleSpacing; }
120 /** @return Thickness of print board */
121 Double_t GetPrintboardThickness() const { return fPrintboardThickness; }
122 /** @return Thickness copper of print board */
123 Double_t GetCopperThickness() const { return fCopperThickness; }
124 /** @return Thickness chip of print board */
125 Double_t GetChipThickness() const { return fChipThickness; }
126 /** @return Value of spacing between si and PCB */
127 Double_t GetSpacing() const { return fSpacing; }
128 /** @return The strip pitch */
129 Double_t GetPitch() const { return (fMaxR - fMinR) / fNStrips; }
130 /** @return Radius (in cm) correspondig to strip @a strip */
131 Double_t GetStripRadius(UShort_t strip) const;
133 /** @return List of verticies */
134 const TObjArray& GetVerticies() const { return fVerticies; }
135 /** @return Number of verticies */
136 Int_t GetNVerticies() const { return fVerticies.GetEntries(); }
137 /** @param i Vertex number
138 @return the ith vertex */
139 TVector2* GetVertex(Int_t i) const;
142 void Detector2XYZ(UShort_t sector, UShort_t strip,
143 Double_t& x, Double_t& y, Double_t& z) const;
145 Bool_t XYZ2Detector(Double_t x, Double_t y, Double_t z,
146 UShort_t& sector, UShort_t& strip) const;
148 Char_t fId; // The Id of this ring type
149 Double_t fBondingWidth; // With of bonding pad on sensor
150 Double_t fWaferRadius; // Size of wafer sensor was made from
151 Double_t fSiThickness; // Thickness of sensor
152 Double_t fLowR; // Lower radius of ring
153 Double_t fHighR; // Upper radius of ring
154 Double_t fMinR; // Lower radius of active strips
155 Double_t fMaxR; // Upper radius of active strips
156 Double_t fTheta; // Opening angle of the silicon wafers
157 Int_t fNStrips; // Number of strips
158 Double_t fRingDepth; // How far the ring extends beyond z
159 Double_t fLegRadius; // Radius of support legs
160 Double_t fLegLength; // Radius of support legs
161 Double_t fLegOffset; // Radius of support legs
162 Double_t fModuleSpacing; // Staggering offset
163 Double_t fPrintboardThickness; // Thickness of print board
164 Double_t fCopperThickness; // Thickness of Cu on print board
165 Double_t fChipThickness; // Thickness of chip on print board
166 Double_t fSpacing; // Spacing between si and PCB
168 TObjArray fVerticies; // List of verticies
170 ClassDef(AliFMDRing, 0);
173 //____________________________________________________________________