... Version 04.02.04

Program of the BLM internal review:

1. Functional specifications + Engineering specification, .... (B. Dehning)
   BLMA, BLMSI, BLMSS, BLMCI, BLMCS, BLMB

a. Quench and damage prevention/protection, criticality of detectors

b. Loss levels

c. Response time

d. Protons/Ions (different loss location, different fluence)

e. Dynamic range of currents

f. Response time

2. Reliability issues................................................................. (G. Guaglio)

a. setting scope of requirements

b. failure scenario

c. false dump

d. discussion of present system (redundancy)

e. installation of system, monitoring/test of system, maintenance

3. Loss simulations................................................................ (E.B. Holzer)

a. ARC, straight sections (except collimation)

i. Shower amplitude

ii. Shower length and variation

iii. Shower locations and variation

iv. Particle momentum direction in theta and phi

v. Particle species

vi. energy distribution of particles at the location of the detectors

b. Same list for collimation.

c. Other special locations (triplet)

4. Ionisation chamber and SEM ............................................. (G. Ferioli)

a. tunnel location limitations, lateral, longitudinal

b. ionisation chamber and SEM design

i. dimensions, diameter, length, materials, mounting

ii. treatment, cleaning................................... (E.B. Holzer)

iii. SPS measurements on installed chambers, gain variation.................................................. (M. Hodgson)

iv. gain variation on test in H6, BOOSTER. (G. Ferioli, not presented)

v. tests on new prototypes (M. Hodgson, see talk: SPS …)

5. Installation in tunnel, RR, UJ, surface.................................. (G. Ferioli)

a. racks

i. below quad

ii. in RR, UA,UJ

iii. dump lines

b. cabling

i. different layouts

ii. signals distribution

iii. noise consideration

iv. ground loops

c. surface installations

d. installation procedure

i. schedule

ii. procedure

iii. man power

6. Tunnel electronics................................................................ (G. Ferioli)

a. BLM_CFC (SPS PCB)

i. General description

ii. Input currents (high voltage protection)

iii. Dark currents

iv. Radiation issues.......................................... (G. Guaglio)

v. Variation with temperature (humidity, dust)............. (E. Effinger)

vi. Component variation

b. CFC test procedures

i. Test in between of two fills........................ (G. Guaglio)

ii. Test of PCB during development phase .... (to be done)

c. CFC digital part................................................. (C. Zamantzas)

i. CRC-32

ii. Format of frame

iii. Counters/multiplexers

iv. ADC data registers

d. LASER transmission

i. Discussion on options (slow, fast transmission)........ (C. Zamantzas)

ii. Laser issues (types, radiation).................... (G. Guaglio)

7. Surface electronics, BLM_TC

a. General description of DAB board....................... (J. Gonzalez)

i. DAB card features

ii. Differences between BPM and BLM implementation (SRAM, price)

iii. Test procedures

iv. Schedule for ordering, testing, production

b. BLM implementation......................................... (C. Zamantzas)

i. Approximation of dump levels................... (G. Guaglio)

ii. 16 channels

iii. 64 energy levels, 12 running sums, memory

iv. unique threshold table, update of thresholds

v. energy inputs, beam status input

vi. time stamp

vii. logging, warning levels

viii. post mortem

ix. identification of cards (card ID, position identification)

8. Combiner card, BLM_COM................................................ (G. Ferioli)

a. functionality

b. dump signal collection and transmission to interlock controller (BIC)

c. beam energy input and distribution in crate

d. beam permit input and distribution in crate

e. collection of status of crate and HV power converter status

9. Answers to Questions during the review.......................... (E.B. Holzer)

a. Steady proton loss rates and quench levels

b. Simulation:

i. Influence of magnetic field on secondary particle distribution

ii. Angular distribution of secondaries

c. History ISR and SPS BLM chambers

d. Longitudinal loss positions

e. Electron and ion signal (parallel and coaxial geometry):

i. Shape

ii. Speed

iii. Magnitude