	<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
4	83	401481	12	84	569497	13	79	490745	12	11-JUL-07

Thr_Max in register units for M3R4-4

Thr_Max in register units for M3R4-4

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	90	82	81	78	78	87	91	75	90	86	82	79	84	81	82	82
FEB-2	89	84	89	83	82	83	85	81	83	82	88	86	84	80	85	79
FEB-3	76	81	76	84	81	85	71	76	80	81	78	83	81	79	79	76

Noise rate at Thr_Max [counts/sec] for M3R4-4

Noise rate at Thr_Max [counts/sec] for M3R4-4

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	372802	489143	396899	317257	548314	375862	359187	309352	339607	310495	385020	358746	447578	392159	498492	522782
FEB-2	484928	674262	487820	687327	429455	403060	463374	449373	585247	749082	461283	467235	677475	509324	826891	755823
FEB-3	473186	457471	656478	339201	397305	386646	497338	378654	445788	443012	631746	342053	807808	531016	614034	450184