IP2I CMS Wiki

Calibration Board 3 (FE # 4)

Resistance 100 kOhm

Pedestals

* Aucun cable d'injection connecte

Piste par piste , 737733
Tous ensemble ,737735, 737738. Tres peu de bruits, tous alignes a 361

* On allume le gene, rien de connecte

737739, un pic de bruit apparait!
On connecte la masse du gene au plan superieur

* Des masses de partout!!!

Injection

* 500 mV 737769

canal 2 395

canal 14 390

* 200 mV 737770

canal 2 371 canal 14 370

* 150 mV 737771

canal 2 367 canal 14 366

* 120 mV 737772

canal 2 canal 14

On obtient 12.3 mV par VTH count du cote large et 14.7 mV par VTH du cote oppose

Donc entre 6 et 7 fC (facteur 2 du au partage des charges) par DAC.

Le piedestal mesure est a 362, extrapole a 355 on est sans doute pas completement lineaire a basse injection

Si on regarde le rapport des signaux transmis et proche on a

On retrouve le rapport mesure de 12.3/14.7 ~ 84 %

Etude de l'efficacite

Seuil minimal 368 ⇒ environ 7*7.3=51 fC

Injection cote large, en comptant un coup de “turn on” on s'attend a etre efficace du cote injection a

(369-355.26)/0.0814 = 169 mV

et des deux cotes a

(369-356.0)/0.0679 = 191 mV

On obtient:

run	Injection(fC)	N trg	N 2	N 14	Eff	deFF	Eff XY	deff XY	dt (ns)	RMS dt (ns)
737785	150	4784	3315	130	69.29	0.67	2.72	0.24	-17.66	0.337
737784	160	7776	7707	4048	99.11	0.11	52.06	0.57	-17.62	0.304
737782	170	5797	5794	5240	99.95	0.03	90.39	0.39	-17.50	0.280
737786	180	16367	16364	14730	99.98	0.01	90.00	0.23	-17.66	0.263
737787	190	11414	11414	11304	100.00	0.00	99.04	0.09	-17.61	0.215
737788	200	14157	14157	14147	100.00	0.00	99.93	0.02	-17.57	0.204
737789	250	14939	14939	14939	100.00	0.00	100.00	0.00	-17.61	0.172
737790	300	13358	13358	13358	100.00	0.00	100.00	0.00	-17.57	0.173
737791	500	11894	11894	11894	100.00	0.00	100.00	0.00	-17.40	0.124
737792	1000	15454	15454	15454	100.00	0.00	100.00	0.00	-17.16	0.071

737795	160	20792	20792	181	100.00	0.87	0.06	0.04	0.239
737798	170	13197	13197	654	100.00	4.96	0.19	0.15	0.235
737799	180	27589	27589	6367	100.00	23.08	0.25	0.12	0.225
737800	190	15538	15538	8984	100.00	57.82	0.40	0.06	0.235
737794	200	13980	13980	13449	100.00	96.20	0.16	0.03	0.190
737801	210	27889	27889	27460	100.00	98.46	0.07	-0.04	0.178
737802	220	14420	14420	14340	100.00	99.45	0.06	-0.18	0.199
737803	300	11582	11582	11577	100.00	99.96	0.02	-0.51	0.173

Run	Injection	Events	Efficiency	2 cotes	Resolution (ps)
737782	170	2956	100	90.2	278
737784	160	5591	99.6	57.2	306
737785	150	2152	71.7	4	330
737786	180	16367	100	90	265
737787	190	11414	100	99	220
737788	200	14157	100	100	210
737789	250	14900	100	100	178
737790	300	13359	100	100	174
737791	500	11894	100	100	124
737792	1000	15454	100	100	69

Injection cote 14 (etroit)

Run	Injection	Events	Efficiency	2 cotes	Resolution (ps)
737794	200	13980	100	96.2	204
737795	160	20792	100	0.9	270
737798	170	13197	100	5.0	267
737799	180	27589	100	23.1	243
737800	190	15538	100	57.8	247
737801	210	27889	100	98.5	188
737802	220	14340	100	99.5	207
737803	300	11583	100	100	178

Delat T -17.6 et -0.5 donc 17.1=2 x dt ⇒ dt =8.6 compatible avec la mesure des pulses (8.3)

On change de piste 73

et on s'arrache la tete, le delai trigger / pulse doit etre regle a 2.5 ns pres car on peut tomber sur le temps mort du TDC….

Run 737813 , 250 fC cote etroit on n'est pas pleinement efficace des deux cotes (78 %)

737818 200 mV de l'autre cote

737819 210 mV

737820 220 mV (69 %)

On a donc quasiment 50 fC d'eccart entre les deux pistes… A comprendre est ce du a un probleme de gain ?

Resistance 150 kOhm

pedestals

separees all at 31

Run 737897

[329.8383850069412, 338.8306754221388, 344.2252510760402, 342.5212249848393, 349.84411239964317, 347.26503960608005, 345.5721327967807, 344.1441947565543, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 323.52208201892745, 328.007655393053, 331.68205405405405, 330.8333719046517, 330.7964367816092, 326.54009433962267, 319.96534161490683, 322.15447637140824]
 
Alignment to : 324.965341615
[29, 26, 25, 25, 23, 23, 24, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 30, 29, 29, 29, 30, 33, 32]

Run verification 737898

Pedestal centre a 327

[325.8353293413174, 326.7075669383004, 327.053392259914, 326.0224846328049, 328.6779397705545, 326.76496800731263, 329.03019970774477, 328.0180568499534, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 326.5226199353716, 327.0759254892714, 329.03002257336345, 325.8924501424501, 327.6408518877057, 325.3631103911132, 327.0556603773585, 325.9967320261438]
 
Alignment to : 330.363110391
[33, 32, 32, 32, 32, 32, 31, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 31, 33, 32, 33, 32, 32]

Pedestal All together 737899

Injection piste 71 cote TDC 2

run	Injection (fC)	turn On 2	turn on 14
737908	200	349	342
737907	250	355.5	348
737903	300	362	353
737905	350	370	359.5
737904	400	377	366
737906	500	390	377

Fig. 1: Calibration FE4 resistance 150 Ohm

Etude de l'efficacité

Seuil a 343

(343-327)/0.139 =115 fC /2 ⇒ 57.5 fC par canal

run	Injection(fC)	N trg	N 2	N 14	Eff	deFF	Eff XY	deff XY	$\Delta T$ (ns)	$\sigma$ dt (ns)
737910	160	2381	1989	76	83.54	0.76	3.19	0.36	-17.21	0.402
737911	170	2380	2302	349	96.72	0.36	14.66	0.73	-17.34	0.377
737912	180	2383	2375	964	99.66	0.12	40.45	1.01	-17.42	0.326
737913	190	2381	2381	1713	100.00	0.00	71.94	0.92	-17.50	0.292
737914	200	2383	2383	2180	100.00	0.00	91.48	0.57	-17.46	0.252
737915	210	2381	2381	2331	100.00	0.00	97.90	0.29	-17.40	0.228
737916	220	2381	2381	2371	100.00	0.00	99.58	0.13	-17.38	0.220
737917	230	2383	2383	2374	100.00	0.00	99.62	0.13	-17.44	0.239
737918	250	2381	2381	2381	100.00	0.00	100.00	0.00	-17.60	0.192
737919	500	2381	2381	2381	100.00	0.00	100.00	0.00	-17.40	0.077
737920	1000	2382	2382	2381	100.00	0.00	99.96	0.04	-17.46	0.051

Fig. 2: Efficacite en fonction de l'injection, FE4 resistance 150 Ohm, du cote de l'injection et du cote oppose

Fig. 3: Resolution en temps FE4 resistance 150 Ohm

— mirabito 2017/11/26 15:40

Calibration Board 2

Resistance 100 kOhm

Pedestal

* Piste par piste

Run 737827 tous les canaux a 31 fichier PR2_TDC7_737733_Board2.json

Correction

    dac[i]=int(round(old[i]+(med-ped[i])*1./2.97))

J'ai mis un facteur 1 car je crois que le rapport a utiliser et celui que m'avait donne Nathalie

On obtient pour le PETIROC:

[526.4389607160616, 520.36827148111, 517.0154950869237, 537.4540172642762, 542.3748160863169, 535.4546346248161, 533.0708641975309, 535.0666831316374, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 516.0272040302267, 529.4941191191191, 515.4653403403404, 523.6680430430431, 524.3245158242796, 522.5375281461096, 531.0689612326044, 519.7234042553191]
 
[29, 31, 32, 25, 24, 26, 27, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 28, 33, 30, 30, 30, 27, 31]

Run apres realignement 737829

[520.9286067193676, 521.4198548812665, 520.7046224588577, 520.1427212178877, 520.2083950617284, 520.3633200795229, 520.2205846528624, 520.0534304047384, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 522.8704023697852, 520.5618313013188, 522.772006827603, 520.4732377538829, 522.0271739130435, 520.8262012012012, 519.772546583851, 521.0904347826087]
 
Alignment to : 524.772546584
[32, 32, 32, 33, 33, 32, 33, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 32, 32, 32, 32, 33, 32]

Avec toutes les pistes alignes 727830

On obtient :

[522.8711790393013, 521.619812583668, 521.7325301204819, 522.7821482602118, 522.7918313570487, 522.591849935317, 522.5179487179487, 523.1693766937669, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 522.5348258706467, 522.4192182410424, 522.8073566084788, 523.1639035418236, 522.8275541795666, 522.2118537200504, 522.1827284105132, 523.0398457583548]

En prenant 523 comme piedestal et 1.5 de bruit on essaie une coupure a 531 Trop bas

on met 536

Injection

737832	200	551	533
737833	250	559	533
737834	300	568.5	532
737835	350	580.6	533

On fait un essai en supprimant la 100 kOhm

Non concluant, om augmente le gain, le pedestal ~ 325, bcp de bruit (737843)

Coupure a 380 ⇒ 100 % efficacite pour 190 mV injecte

Resistance 68 kOhm

Ca ne marche pas

Resistance 150 kOhm

Pedestals piste / piste 737865

[484.5533201678598, 473.86687983843825, 467.43546365914784, 495.70765113350126, 504.15454134658836, 493.12993716337525, 489.69016239115086, 493.90647994303345, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 467.59760403530896, 487.1604968339016, 466.51782077393074, 477.57714285714286, 478.68060200668896, 476.5175438596491, 490.18785485065416, 471.2535651738804]
 
Alignment to : 471.517820774
[27, 30, 32, 23, 20, 24, 25, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 26, 33, 29, 29, 29, 25, 31]

Run de verification 737866

Pedestal alltogether

737868

pedestal 471 , bruit < 1

On branche le cable d'injection

737869 , le bruit augmente a 1.7

Injection

Injection cote large

run	Injection (mV)	cote large	Etroit
737872	500	559	550
737873	400	541	534
737874	350	532	525
737875	300	522	516
737876	250	513	505.5
737877	225	507	502
737878	200	502	497

Fig. 4: Turn -on (DAC VTH) en fonction de l'injection

On met le seuil a 494

(494-471)/0.1845 = 125 fC /2 ⇒ 62.5 fC de seuil par canal

run	Injection(fC)	N trg	N 2	N 14	Eff	deFF	Eff XY	deff XY	dt (ns)	RMS dt (ns)
737880	160	7748	6618	2007	85.42	0.40	25.90	0.50	-17.30	0.336
737881	170	4103	4020	2651	97.98	0.22	64.61	0.75	-17.36	0.307
737882	180	5100	5096	4476	99.92	0.04	87.76	0.46	-17.40	0.310
737883	190	4829	4829	4672	100.00	0.00	96.75	0.26	-17.42	0.291
737884	200	3361	3361	3216	100.00	0.00	95.69	0.35	-17.46	0.277
737885	210	3268	3265	3227	99.91	0.05	98.75	0.19	-17.49	0.228
737886	220	3408	3403	3313	99.85	0.07	97.21	0.28	-17.49	0.193
737887	250	3096	3096	3095	100.00	0.00	99.97	0.03	-17.52	0.203

On des burst de bruits…. ce qui explique les fluctuations

Si on met le seuil a 496 et 200 mV

run	Injection(fC)	N trg	N 2	N 14	Eff	deFF	Eff XY	deff XY	dt (ns)	RMS dt (ns)
737892	210	3095	3095	3034	100.00	0.00	98.03	0.25	-17.45	0.288
737888	200	3093	3093	3008	100.00	0.00	97.25	0.29	-17.46	0.298
737889	190	3094	3092	2718	99.94	0.05	87.85	0.59	-17.39	0.316
737890	180	3094	3041	2040	98.29	0.23	65.93	0.85	-17.37	0.308
737891	170	3097	2611	699	84.31	0.65	22.57	0.75	-17.31	0.347

Fig. 5: Efficacite de detectiron du cote de l'injection (orange) et oppose (bleu)

Resolution la plus mauvaise observee ~ 0.3/8.6 ⇒ 5 cm

Su la figure 5 on observe:

Seuil minimal de detection electronique ⇒ 90 fC, Q injected 180 fC

Seuil minimal de mesure X,Y Q injected 200 fC

Les résultats sont quasiment identiques à ceux mesurés avec le Board 3 (FE #4)

— mirabito 2017/11/23 06:35 — DAQ user 2017/11/27 12:12

IP2I CMS Wiki

User Tools

Site Tools

Table of Contents

Calibration Board 3 (FE # 4)

Resistance 100 kOhm

Pedestals

Injection

Etude de l'efficacite

Resistance 150 kOhm

pedestals

Injection piste 71 cote TDC 2

Etude de l'efficacité

Calibration Board 2

Resistance 100 kOhm

Pedestal

Injection

Resistance 68 kOhm

Resistance 150 kOhm

Pedestals piste / piste 737865

Pedestal alltogether

Injection

Page Tools