	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
57	82	551024	14	77	435698	11	74	538173	13	19-JUN-07

Thr_Max in register units for M3R4-57

Thr_Max in register units for M3R4-57

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	79	92	79	85	84	84	75	81	80	83	83	77	80	82	83	79
FEB-2	84	68	79	72	79	76	83	70	78	74	83	69	85	69	85	70
FEB-3	69	82	71	79	72	69	75	72	72	75	72	72	72	74	81	71

Noise rate at Thr_Max [counts/sec] for M3R4-57

Noise rate at Thr_Max [counts/sec] for M3R4-57

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	472299	577315	695655	573482	299524	421815	473592	399068	451999	457201	792154	590101	662788	606385	673953	669050
FEB-2	613521	478997	557951	397013	435141	308149	425649	363262	452329	268134	372259	285446	427242	426410	628714	530953
FEB-3	543305	628651	410309	591598	530806	438329	530727	379676	302032	793446	412070	485282	516306	567541	719279	761406