1. THERMAL ANALYSIS OF ETA=3 REGION EE AND SE I.Wichrowska-Polok ST/CV CMS EE workshop 13th of March 2002 1. The purpose of the analysis. 2. The model description. 3. Boundary conditions 4. The results of the analysis.

2. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV2 THE PURPOSE OF THE ANALYSIS. Temperature of the gas can vary 3 degrees from its mean Crystals requirements: +/-0.1 o in time, 2 o in space Goals of analysis: Find temperature variation inside SC array; Find the effect of insulation of SE cone (20 mm thick).

3. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV3 THE MODEL AND BOUNDARY CONDITIONS back plate set at 18.05C; rear of SE set at 18.02C; SE cone/SE fixation 18.5C adiabatic conditions -outer part of the model steady state analysis for gas temperature 18C (first run) and 20C(second run)

4. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV4 THE MODEL - DETAILS OF THE MESH

5. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV5 THE RESULTS OF THE ANALYSIS

6. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV6 THE RESULTS OF THE ANALYSIS FOR 1st CASE (NO INSULATION) Temperature maps of the SC situated close to the central hole for nitrogen temperature 18°C (on the left) and 20°C (on the right)

7. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV7 Temperature maps of the SC situated in centrum of SC array for nitrogen temperature 18°C (on the left) and 20°C (on the right) THE RESULTS OF THE ANALYSIS FOR 1st CASE (NO INSULATION)

8. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV8 Temperature maps of the SC situated in outer part of SC array for nitrogen temperature 18°C (on the left) and 20°C (on the right) THE RESULTS OF THE ANALYSIS FOR 1st CASE (NO INSULATION)

9. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV9 THE RESULTS OF THE ANALYSIS FOR 2nd CASE (WITH INSULATION) Temperature maps of the SC situated close to central hole for nitrogen temperature 18°C (on the left) and 20°C (on the right)

10. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV10 THE RESULTS OF THE ANALYSIS FOR 2nd CASE (WITH INSULATION) Temperature maps of the SC situated in centrum of SC array for nitrogen temperature 18°C (on the left) and 20°C (on the right)

11. EE workshop 13th March 2002Izabella Wichrowska-Polok ST/CV11 THE RESULTS OF THE ANALYSIS FOR 2nd CASE (WITH INSULATION) Temperature maps of the SC situated in outer part of SC array for nitrogen temperature 18°C (on the left) and 20°C (on the right)