PHOBOS
1997

Test-beam Compilation

A) BIAS Scan

2,4,6,8,10,12,14,16,18,20,25,30,35,40,45,50,55,60 V

2 GeV neg. Files 031 - 051 10 k ea.

WA98 mid-top For large statistic in nominal setting for Phobos type I, add the runs of background B)

GeV

0.5 neg

1.0 neg

2 pos

2 neg

4 neg

5 pos

5 neg

kEvents

39 k

30 k

85 k

404 k

169 k

84 k

898 k

files 358-364 200 ns, 100 ns, 50 ns ADC Gate width 20 k ea

0,5,10,15,20,25,30,35,40,45,50,55,50,30,30,20,60 V 4 GeV neg 285 - 30310 k ea.

Plus at 50 V 280 - 284 and 304 - 311 at 50 V total 130 k

Problems with the read out

B)  Background

Empty Target runs see C)

Momentum

WA98 Pos

Target

files

Total in kEvents

   

Berellium, Be

   

5 GeV neg

Mid

thick Be

80 - 92

130 k

5 GeV neg

Bott

thick Be

93-104

104 k

   

-------

   

0.5 GeV neg

Bott

thin Be

209-212

39 k

1 Gev neg

Bott

thin Be

214-217

<31 k

2 Gev pos

Mid

thin Be

191-199

85 k

2 GeV neg

Bott

thin Be

213

9 k

2 Gev neg

Bott

thin Be

219-227

229-231

180 k

2 GeV neg

Mid

thin Be

232-239

241-244

213

106 k

50k

9k

2 GeV neg

Mid Bott

thin Be

245-254

100k

4 GeV neg

Mid

thin Be

259-270

119 k

5 Gev neg

Mid

thin Be

177-190

130 k

5 Gev pos

Bott

thin Be

200-208

84k

5 GeV neg

Top

thin Be

255-258

40 k

         
   

Aluminium, Al

   

5 Gev neg

Bott

thick Al

113-122

100 k

4 GeV neg

Mid

thin Al

274 -278

50 k

   

-------

   

5 Gev neg

Mid

thick Al

123-130

131 ?

137

80 k

30 k

10k

   

Iron, Fe

   

5 Gev neg

Mid

thick Fe

141-145

50 k

5 Gev neg

Bott

thick Fe

146-150

50 k

   

-------

   

5 Gev neg

Bott

thin Fe

152-160

90 k

5 Gev neg

Mid

thin Fe

163-173

110 k

C) WA98 tests

Top

4 Gev Neg 312 - total 0k

Mid-Top

2 GeV neg 52 - 60 total 80 k

4 GeV neg 280 - 292 total 170 k

Mid

5 GeV / 2 GeV neg 61 - 79 total 180 k

5 GeV neg 138-140 28 k

5 GeV neg 174-176 30 k

Mid Bott

4 Gev neg 309 - 311 total 25 k

Bott

(beam goes thru the hole, not useful for pulse height scan)

5 GeV neg 105 - 112 total 82 k

161-162 20 k

Only MT runs listed, but the target runs are useful, too.

THE ULTIMATE WA98 scan

5 Gev neg 321 - 360 ea 10 k

6 (!) positions 50 /100 k ea